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Finding the Fourth Proportional to 8,951.31, 12,352.70 and 5,174.48

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Solution

The fourth proportional to 8,951.31, 12,352.70 and 5,174.48 is: 7,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.31 : 12,352.70 = 5,174.48 : x
  2. Step 2: Convert to fraction form
    8,951.31/12,352.70 = 5,174.48/x
  3. Step 3: Cross multiply
    8,951.31x = 12,352.70 × 5,174.48
  4. Step 4: Simplify right side
    8,951.31x = 63,918,842.91
  5. Step 5: Solve for x
    x = 63,918,842.91/8,951.31
  6. Step 6: Final answer
    x = 7,140.72

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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.