Home / 8,958.42-13,437.76-3,115.20

Finding the Fourth Proportional to 8,958.42, 13,437.76 and 3,115.20

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Solution

The fourth proportional to 8,958.42, 13,437.76 and 3,115.20 is: 4,672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.42 : 13,437.76 = 3,115.20 : x
  2. Step 2: Convert to fraction form
    8,958.42/13,437.76 = 3,115.20/x
  3. Step 3: Cross multiply
    8,958.42x = 13,437.76 × 3,115.20
  4. Step 4: Simplify right side
    8,958.42x = 41,861,309.95
  5. Step 5: Solve for x
    x = 41,861,309.95/8,958.42
  6. Step 6: Final answer
    x = 4,672.85

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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.