Home / 9,217.90-12,719.16-5,439.70

Finding the Fourth Proportional to 9,217.90, 12,719.16 and 5,439.70

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Solution

The fourth proportional to 9,217.90, 12,719.16 and 5,439.70 is: 7,505.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.90 : 12,719.16 = 5,439.70 : x
  2. Step 2: Convert to fraction form
    9,217.90/12,719.16 = 5,439.70/x
  3. Step 3: Cross multiply
    9,217.90x = 12,719.16 × 5,439.70
  4. Step 4: Simplify right side
    9,217.90x = 69,188,414.65
  5. Step 5: Solve for x
    x = 69,188,414.65/9,217.90
  6. Step 6: Final answer
    x = 7,505.88

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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.