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Finding the Fourth Proportional to 9,387.72, 12,951.36 and 6,554.34

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Solution

The fourth proportional to 9,387.72, 12,951.36 and 6,554.34 is: 9,042.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387.72 : 12,951.36 = 6,554.34 : x
  2. Step 2: Convert to fraction form
    9,387.72/12,951.36 = 6,554.34/x
  3. Step 3: Cross multiply
    9,387.72x = 12,951.36 × 6,554.34
  4. Step 4: Simplify right side
    9,387.72x = 84,887,616.90
  5. Step 5: Solve for x
    x = 84,887,616.90/9,387.72
  6. Step 6: Final answer
    x = 9,042.41

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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.