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Finding the Fourth Proportional to 8,397.45, 12,585.80 and 4,238.65

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Solution

The fourth proportional to 8,397.45, 12,585.80 and 4,238.65 is: 6,352.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397.45 : 12,585.80 = 4,238.65 : x
  2. Step 2: Convert to fraction form
    8,397.45/12,585.80 = 4,238.65/x
  3. Step 3: Cross multiply
    8,397.45x = 12,585.80 × 4,238.65
  4. Step 4: Simplify right side
    8,397.45x = 53,346,732.86
  5. Step 5: Solve for x
    x = 53,346,732.86/8,397.45
  6. Step 6: Final answer
    x = 6,352.73

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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.