Home / 5,147.52-7,715.88-2,679.72

Finding the Fourth Proportional to 5,147.52, 7,715.88 and 2,679.72

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Solution

The fourth proportional to 5,147.52, 7,715.88 and 2,679.72 is: 4,016.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.52 : 7,715.88 = 2,679.72 : x
  2. Step 2: Convert to fraction form
    5,147.52/7,715.88 = 2,679.72/x
  3. Step 3: Cross multiply
    5,147.52x = 7,715.88 × 2,679.72
  4. Step 4: Simplify right side
    5,147.52x = 20,676,397.95
  5. Step 5: Solve for x
    x = 20,676,397.95/5,147.52
  6. Step 6: Final answer
    x = 4,016.77

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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.