Home / 3,545.80-5,318.90-1,080.70

Finding the Fourth Proportional to 3,545.80, 5,318.90 and 1,080.70

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Solution

The fourth proportional to 3,545.80, 5,318.90 and 1,080.70 is: 1,621.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.80 : 5,318.90 = 1,080.70 : x
  2. Step 2: Convert to fraction form
    3,545.80/5,318.90 = 1,080.70/x
  3. Step 3: Cross multiply
    3,545.80x = 5,318.90 × 1,080.70
  4. Step 4: Simplify right side
    3,545.80x = 5,748,135.23
  5. Step 5: Solve for x
    x = 5,748,135.23/3,545.80
  6. Step 6: Final answer
    x = 1,621.11

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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.