Home / 3,545.30-5,318.15-1,080.20

Finding the Fourth Proportional to 3,545.30, 5,318.15 and 1,080.20

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Solution

The fourth proportional to 3,545.30, 5,318.15 and 1,080.20 is: 1,620.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.30 : 5,318.15 = 1,080.20 : x
  2. Step 2: Convert to fraction form
    3,545.30/5,318.15 = 1,080.20/x
  3. Step 3: Cross multiply
    3,545.30x = 5,318.15 × 1,080.20
  4. Step 4: Simplify right side
    3,545.30x = 5,744,665.63
  5. Step 5: Solve for x
    x = 5,744,665.63/3,545.30
  6. Step 6: Final answer
    x = 1,620.36

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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.