Home / 3,720.43-5,581.19-1,123.57

Finding the Fourth Proportional to 3,720.43, 5,581.19 and 1,123.57

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Solution

The fourth proportional to 3,720.43, 5,581.19 and 1,123.57 is: 1,685.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.43 : 5,581.19 = 1,123.57 : x
  2. Step 2: Convert to fraction form
    3,720.43/5,581.19 = 1,123.57/x
  3. Step 3: Cross multiply
    3,720.43x = 5,581.19 × 1,123.57
  4. Step 4: Simplify right side
    3,720.43x = 6,270,857.65
  5. Step 5: Solve for x
    x = 6,270,857.65/3,720.43
  6. Step 6: Final answer
    x = 1,685.52

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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.