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Finding the Fourth Proportional to 8,600.76, 11,869.20 and 5,065.92

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Solution

The fourth proportional to 8,600.76, 11,869.20 and 5,065.92 is: 6,991.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.76 : 11,869.20 = 5,065.92 : x
  2. Step 2: Convert to fraction form
    8,600.76/11,869.20 = 5,065.92/x
  3. Step 3: Cross multiply
    8,600.76x = 11,869.20 × 5,065.92
  4. Step 4: Simplify right side
    8,600.76x = 60,128,417.66
  5. Step 5: Solve for x
    x = 60,128,417.66/8,600.76
  6. Step 6: Final answer
    x = 6,991.06

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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.