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Finding the Fourth Proportional to 8,600.13, 12,917.48 and 7,515.81

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Solution

The fourth proportional to 8,600.13, 12,917.48 and 7,515.81 is: 11,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.13 : 12,917.48 = 7,515.81 : x
  2. Step 2: Convert to fraction form
    8,600.13/12,917.48 = 7,515.81/x
  3. Step 3: Cross multiply
    8,600.13x = 12,917.48 × 7,515.81
  4. Step 4: Simplify right side
    8,600.13x = 97,085,287.78
  5. Step 5: Solve for x
    x = 97,085,287.78/8,600.13
  6. Step 6: Final answer
    x = 11,288.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.