Home / 5,439.20-8,158.68-1,543.64

Finding the Fourth Proportional to 5,439.20, 8,158.68 and 1,543.64

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Solution

The fourth proportional to 5,439.20, 8,158.68 and 1,543.64 is: 2,315.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.20 : 8,158.68 = 1,543.64 : x
  2. Step 2: Convert to fraction form
    5,439.20/8,158.68 = 1,543.64/x
  3. Step 3: Cross multiply
    5,439.20x = 8,158.68 × 1,543.64
  4. Step 4: Simplify right side
    5,439.20x = 12,594,064.80
  5. Step 5: Solve for x
    x = 12,594,064.80/5,439.20
  6. Step 6: Final answer
    x = 2,315.43

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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.