Home / 5,412.80-8,119.22-1,517.20

Finding the Fourth Proportional to 5,412.80, 8,119.22 and 1,517.20

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Solution

The fourth proportional to 5,412.80, 8,119.22 and 1,517.20 is: 2,275.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.80 : 8,119.22 = 1,517.20 : x
  2. Step 2: Convert to fraction form
    5,412.80/8,119.22 = 1,517.20/x
  3. Step 3: Cross multiply
    5,412.80x = 8,119.22 × 1,517.20
  4. Step 4: Simplify right side
    5,412.80x = 12,318,480.58
  5. Step 5: Solve for x
    x = 12,318,480.58/5,412.80
  6. Step 6: Final answer
    x = 2,275.81

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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.