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Finding the Fourth Proportional to 8,488.47, 12,732.68 and 4,789.02

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Solution

The fourth proportional to 8,488.47, 12,732.68 and 4,789.02 is: 7,183.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.47 : 12,732.68 = 4,789.02 : x
  2. Step 2: Convert to fraction form
    8,488.47/12,732.68 = 4,789.02/x
  3. Step 3: Cross multiply
    8,488.47x = 12,732.68 × 4,789.02
  4. Step 4: Simplify right side
    8,488.47x = 60,976,995.51
  5. Step 5: Solve for x
    x = 60,976,995.51/8,488.47
  6. Step 6: Final answer
    x = 7,183.51

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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.