Home / 3,643.38-5,462.91-1,390.92

Finding the Fourth Proportional to 3,643.38, 5,462.91 and 1,390.92

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Solution

The fourth proportional to 3,643.38, 5,462.91 and 1,390.92 is: 2,085.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,643.38 : 5,462.91 = 1,390.92 : x
  2. Step 2: Convert to fraction form
    3,643.38/5,462.91 = 1,390.92/x
  3. Step 3: Cross multiply
    3,643.38x = 5,462.91 × 1,390.92
  4. Step 4: Simplify right side
    3,643.38x = 7,598,470.78
  5. Step 5: Solve for x
    x = 7,598,470.78/3,643.38
  6. Step 6: Final answer
    x = 2,085.56

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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.