Home / 8,111.15-11,193.39-4,385.15

Finding the Fourth Proportional to 8,111.15, 11,193.39 and 4,385.15

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Solution

The fourth proportional to 8,111.15, 11,193.39 and 4,385.15 is: 6,051.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.15 : 11,193.39 = 4,385.15 : x
  2. Step 2: Convert to fraction form
    8,111.15/11,193.39 = 4,385.15/x
  3. Step 3: Cross multiply
    8,111.15x = 11,193.39 × 4,385.15
  4. Step 4: Simplify right side
    8,111.15x = 49,084,694.16
  5. Step 5: Solve for x
    x = 49,084,694.16/8,111.15
  6. Step 6: Final answer
    x = 6,051.51

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Half scale
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Double scale
Find fourth proportional to 8,112.15, 11,194.77 and 4,386.15
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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.