Home / 3,726.96-5,142.92-2,154

Finding the Fourth Proportional to 3,726.96, 5,142.92 and 2,154

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Solution

The fourth proportional to 3,726.96, 5,142.92 and 2,154 is: 2,972.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726.96 : 5,142.92 = 2,154 : x
  2. Step 2: Convert to fraction form
    3,726.96/5,142.92 = 2,154/x
  3. Step 3: Cross multiply
    3,726.96x = 5,142.92 × 2,154
  4. Step 4: Simplify right side
    3,726.96x = 11,077,849.68
  5. Step 5: Solve for x
    x = 11,077,849.68/3,726.96
  6. Step 6: Final answer
    x = 2,972.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.