Home / 3,545.20-5,318.02-1,080.20

Finding the Fourth Proportional to 3,545.20, 5,318.02 and 1,080.20

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Solution

The fourth proportional to 3,545.20, 5,318.02 and 1,080.20 is: 1,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.20 : 5,318.02 = 1,080.20 : x
  2. Step 2: Convert to fraction form
    3,545.20/5,318.02 = 1,080.20/x
  3. Step 3: Cross multiply
    3,545.20x = 5,318.02 × 1,080.20
  4. Step 4: Simplify right side
    3,545.20x = 5,744,525.20
  5. Step 5: Solve for x
    x = 5,744,525.20/3,545.20
  6. Step 6: Final answer
    x = 1,620.37

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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.