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Finding the Fourth Proportional to 6,486.89, 8,951.51 and 3,654.42

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Solution

The fourth proportional to 6,486.89, 8,951.51 and 3,654.42 is: 5,042.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486.89 : 8,951.51 = 3,654.42 : x
  2. Step 2: Convert to fraction form
    6,486.89/8,951.51 = 3,654.42/x
  3. Step 3: Cross multiply
    6,486.89x = 8,951.51 × 3,654.42
  4. Step 4: Simplify right side
    6,486.89x = 32,712,552.74
  5. Step 5: Solve for x
    x = 32,712,552.74/6,486.89
  6. Step 6: Final answer
    x = 5,042.88

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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.