Home / 8,278.62-11,423.18-5,447.15

Finding the Fourth Proportional to 8,278.62, 11,423.18 and 5,447.15

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Solution

The fourth proportional to 8,278.62, 11,423.18 and 5,447.15 is: 7,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.62 : 11,423.18 = 5,447.15 : x
  2. Step 2: Convert to fraction form
    8,278.62/11,423.18 = 5,447.15/x
  3. Step 3: Cross multiply
    8,278.62x = 11,423.18 × 5,447.15
  4. Step 4: Simplify right side
    8,278.62x = 62,223,743.64
  5. Step 5: Solve for x
    x = 62,223,743.64/8,278.62
  6. Step 6: Final answer
    x = 7,516.20

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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.