Home / 5,334.80-8,002.20-1,439.20

Finding the Fourth Proportional to 5,334.80, 8,002.20 and 1,439.20

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Solution

The fourth proportional to 5,334.80, 8,002.20 and 1,439.20 is: 2,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,334.80 : 8,002.20 = 1,439.20 : x
  2. Step 2: Convert to fraction form
    5,334.80/8,002.20 = 1,439.20/x
  3. Step 3: Cross multiply
    5,334.80x = 8,002.20 × 1,439.20
  4. Step 4: Simplify right side
    5,334.80x = 11,516,766.24
  5. Step 5: Solve for x
    x = 11,516,766.24/5,334.80
  6. Step 6: Final answer
    x = 2,158.80

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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.