Home / 3,610.67-5,412.28-1,388.90

Finding the Fourth Proportional to 3,610.67, 5,412.28 and 1,388.90

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Solution

The fourth proportional to 3,610.67, 5,412.28 and 1,388.90 is: 2,081.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,610.67 : 5,412.28 = 1,388.90 : x
  2. Step 2: Convert to fraction form
    3,610.67/5,412.28 = 1,388.90/x
  3. Step 3: Cross multiply
    3,610.67x = 5,412.28 × 1,388.90
  4. Step 4: Simplify right side
    3,610.67x = 7,517,115.69
  5. Step 5: Solve for x
    x = 7,517,115.69/3,610.67
  6. Step 6: Final answer
    x = 2,081.92

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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.