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Finding the Fourth Proportional to 8,572.14, 11,841.53 and 8,123.27

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Solution

The fourth proportional to 8,572.14, 11,841.53 and 8,123.27 is: 11,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.14 : 11,841.53 = 8,123.27 : x
  2. Step 2: Convert to fraction form
    8,572.14/11,841.53 = 8,123.27/x
  3. Step 3: Cross multiply
    8,572.14x = 11,841.53 × 8,123.27
  4. Step 4: Simplify right side
    8,572.14x = 96,191,845.58
  5. Step 5: Solve for x
    x = 96,191,845.58/8,572.14
  6. Step 6: Final answer
    x = 11,221.45

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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.