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Finding the Fourth Proportional to 8,487.10, 11,717.88 and 7,587.92

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Solution

The fourth proportional to 8,487.10, 11,717.88 and 7,587.92 is: 10,476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.10 : 11,717.88 = 7,587.92 : x
  2. Step 2: Convert to fraction form
    8,487.10/11,717.88 = 7,587.92/x
  3. Step 3: Cross multiply
    8,487.10x = 11,717.88 × 7,587.92
  4. Step 4: Simplify right side
    8,487.10x = 88,914,339.28
  5. Step 5: Solve for x
    x = 88,914,339.28/8,487.10
  6. Step 6: Final answer
    x = 10,476.41

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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.