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Finding the Fourth Proportional to 8,654.74, 12,934.69 and 6,319.68

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Solution

The fourth proportional to 8,654.74, 12,934.69 and 6,319.68 is: 9,444.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.74 : 12,934.69 = 6,319.68 : x
  2. Step 2: Convert to fraction form
    8,654.74/12,934.69 = 6,319.68/x
  3. Step 3: Cross multiply
    8,654.74x = 12,934.69 × 6,319.68
  4. Step 4: Simplify right side
    8,654.74x = 81,743,101.70
  5. Step 5: Solve for x
    x = 81,743,101.70/8,654.74
  6. Step 6: Final answer
    x = 9,444.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.