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Finding the Fourth Proportional to 8,488.10, 12,732.12 and 4,788.65

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Solution

The fourth proportional to 8,488.10, 12,732.12 and 4,788.65 is: 7,182.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.10 : 12,732.12 = 4,788.65 : x
  2. Step 2: Convert to fraction form
    8,488.10/12,732.12 = 4,788.65/x
  3. Step 3: Cross multiply
    8,488.10x = 12,732.12 × 4,788.65
  4. Step 4: Simplify right side
    8,488.10x = 60,969,666.44
  5. Step 5: Solve for x
    x = 60,969,666.44/8,488.10
  6. Step 6: Final answer
    x = 7,182.96

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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.