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Finding the Fourth Proportional to 6,874.75, 9,487.20 and 3,730.96

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Solution

The fourth proportional to 6,874.75, 9,487.20 and 3,730.96 is: 5,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,874.75 : 9,487.20 = 3,730.96 : x
  2. Step 2: Convert to fraction form
    6,874.75/9,487.20 = 3,730.96/x
  3. Step 3: Cross multiply
    6,874.75x = 9,487.20 × 3,730.96
  4. Step 4: Simplify right side
    6,874.75x = 35,396,363.71
  5. Step 5: Solve for x
    x = 35,396,363.71/6,874.75
  6. Step 6: Final answer
    x = 5,148.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.