Home / 3,545.55-5,318.89-1,079.80

Finding the Fourth Proportional to 3,545.55, 5,318.89 and 1,079.80

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Solution

The fourth proportional to 3,545.55, 5,318.89 and 1,079.80 is: 1,619.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.55 : 5,318.89 = 1,079.80 : x
  2. Step 2: Convert to fraction form
    3,545.55/5,318.89 = 1,079.80/x
  3. Step 3: Cross multiply
    3,545.55x = 5,318.89 × 1,079.80
  4. Step 4: Simplify right side
    3,545.55x = 5,743,321.43
  5. Step 5: Solve for x
    x = 5,743,321.43/3,545.55
  6. Step 6: Final answer
    x = 1,619.87

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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.