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Finding the Fourth Proportional to 8,458.25, 12,687.53 and 4,972.73

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Solution

The fourth proportional to 8,458.25, 12,687.53 and 4,972.73 is: 7,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.25 : 12,687.53 = 4,972.73 : x
  2. Step 2: Convert to fraction form
    8,458.25/12,687.53 = 4,972.73/x
  3. Step 3: Cross multiply
    8,458.25x = 12,687.53 × 4,972.73
  4. Step 4: Simplify right side
    8,458.25x = 63,091,572.76
  5. Step 5: Solve for x
    x = 63,091,572.76/8,458.25
  6. Step 6: Final answer
    x = 7,459.18

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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.