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Finding the Fourth Proportional to 5,472.78, 8,209.17 and 3,278.76

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Solution

The fourth proportional to 5,472.78, 8,209.17 and 3,278.76 is: 4,918.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,472.78 : 8,209.17 = 3,278.76 : x
  2. Step 2: Convert to fraction form
    5,472.78/8,209.17 = 3,278.76/x
  3. Step 3: Cross multiply
    5,472.78x = 8,209.17 × 3,278.76
  4. Step 4: Simplify right side
    5,472.78x = 26,915,898.23
  5. Step 5: Solve for x
    x = 26,915,898.23/5,472.78
  6. Step 6: Final answer
    x = 4,918.14

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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.