Home / 3,720.39-5,580.43-1,123.25

Finding the Fourth Proportional to 3,720.39, 5,580.43 and 1,123.25

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Solution

The fourth proportional to 3,720.39, 5,580.43 and 1,123.25 is: 1,684.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.39 : 5,580.43 = 1,123.25 : x
  2. Step 2: Convert to fraction form
    3,720.39/5,580.43 = 1,123.25/x
  3. Step 3: Cross multiply
    3,720.39x = 5,580.43 × 1,123.25
  4. Step 4: Simplify right side
    3,720.39x = 6,268,212.38
  5. Step 5: Solve for x
    x = 6,268,212.38/3,720.39
  6. Step 6: Final answer
    x = 1,684.83

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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.