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Finding the Fourth Proportional to 8,600.42, 11,869.06 and 6,472.13

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Solution

The fourth proportional to 8,600.42, 11,869.06 and 6,472.13 is: 8,931.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.42 : 11,869.06 = 6,472.13 : x
  2. Step 2: Convert to fraction form
    8,600.42/11,869.06 = 6,472.13/x
  3. Step 3: Cross multiply
    8,600.42x = 11,869.06 × 6,472.13
  4. Step 4: Simplify right side
    8,600.42x = 76,818,039.95
  5. Step 5: Solve for x
    x = 76,818,039.95/8,600.42
  6. Step 6: Final answer
    x = 8,931.89

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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.