Home / 8,111.20-11,193.48-4,385.20

Finding the Fourth Proportional to 8,111.20, 11,193.48 and 4,385.20

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Solution

The fourth proportional to 8,111.20, 11,193.48 and 4,385.20 is: 6,051.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.20 : 11,193.48 = 4,385.20 : x
  2. Step 2: Convert to fraction form
    8,111.20/11,193.48 = 4,385.20/x
  3. Step 3: Cross multiply
    8,111.20x = 11,193.48 × 4,385.20
  4. Step 4: Simplify right side
    8,111.20x = 49,085,648.50
  5. Step 5: Solve for x
    x = 49,085,648.50/8,111.20
  6. Step 6: Final answer
    x = 6,051.59

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Find fourth proportional to 4,055.60, 5,596.74 and 2,192.60
Half scale
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Double scale
Find fourth proportional to 8,112.20, 11,194.86 and 4,386.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.