Home / 5,439.15-8,158.73-2,515.86

Finding the Fourth Proportional to 5,439.15, 8,158.73 and 2,515.86

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Solution

The fourth proportional to 5,439.15, 8,158.73 and 2,515.86 is: 3,773.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.15 : 8,158.73 = 2,515.86 : x
  2. Step 2: Convert to fraction form
    5,439.15/8,158.73 = 2,515.86/x
  3. Step 3: Cross multiply
    5,439.15x = 8,158.73 × 2,515.86
  4. Step 4: Simplify right side
    5,439.15x = 20,526,209.88
  5. Step 5: Solve for x
    x = 20,526,209.88/5,439.15
  6. Step 6: Final answer
    x = 3,773.79

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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.