Home / 8,111.25-11,193.53-4,385.25

Finding the Fourth Proportional to 8,111.25, 11,193.53 and 4,385.25

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Solution

The fourth proportional to 8,111.25, 11,193.53 and 4,385.25 is: 6,051.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.25 : 11,193.53 = 4,385.25 : x
  2. Step 2: Convert to fraction form
    8,111.25/11,193.53 = 4,385.25/x
  3. Step 3: Cross multiply
    8,111.25x = 11,193.53 × 4,385.25
  4. Step 4: Simplify right side
    8,111.25x = 49,086,405.51
  5. Step 5: Solve for x
    x = 49,086,405.51/8,111.25
  6. Step 6: Final answer
    x = 6,051.65

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Half scale
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Double scale
Find fourth proportional to 8,112.25, 11,194.91 and 4,386.25
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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.