Home / 3,720.67-5,581.01-1,123.61

Finding the Fourth Proportional to 3,720.67, 5,581.01 and 1,123.61

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Solution

The fourth proportional to 3,720.67, 5,581.01 and 1,123.61 is: 1,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.67 : 5,581.01 = 1,123.61 : x
  2. Step 2: Convert to fraction form
    3,720.67/5,581.01 = 1,123.61/x
  3. Step 3: Cross multiply
    3,720.67x = 5,581.01 × 1,123.61
  4. Step 4: Simplify right side
    3,720.67x = 6,270,853.55
  5. Step 5: Solve for x
    x = 6,270,853.55/3,720.67
  6. Step 6: Final answer
    x = 1,685.41

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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.