Home / 10,077.28-15,115.92-3,922.72

Finding the Fourth Proportional to 10,077.28, 15,115.92 and 3,922.72

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Solution

The fourth proportional to 10,077.28, 15,115.92 and 3,922.72 is: 5,884.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.28 : 15,115.92 = 3,922.72 : x
  2. Step 2: Convert to fraction form
    10,077.28/15,115.92 = 3,922.72/x
  3. Step 3: Cross multiply
    10,077.28x = 15,115.92 × 3,922.72
  4. Step 4: Simplify right side
    10,077.28x = 59,295,521.70
  5. Step 5: Solve for x
    x = 59,295,521.70/10,077.28
  6. Step 6: Final answer
    x = 5,884.08

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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.