Home / 1,545.57-2,318.37-621.55

Finding the Fourth Proportional to 1,545.57, 2,318.37 and 621.55

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Solution

The fourth proportional to 1,545.57, 2,318.37 and 621.55 is: 932.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.57 : 2,318.37 = 621.55 : x
  2. Step 2: Convert to fraction form
    1,545.57/2,318.37 = 621.55/x
  3. Step 3: Cross multiply
    1,545.57x = 2,318.37 × 621.55
  4. Step 4: Simplify right side
    1,545.57x = 1,440,982.87
  5. Step 5: Solve for x
    x = 1,440,982.87/1,545.57
  6. Step 6: Final answer
    x = 932.33

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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.