Home / 3,725.28-5,140.68-2,153.88

Finding the Fourth Proportional to 3,725.28, 5,140.68 and 2,153.88

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Solution

The fourth proportional to 3,725.28, 5,140.68 and 2,153.88 is: 2,972.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,725.28 : 5,140.68 = 2,153.88 : x
  2. Step 2: Convert to fraction form
    3,725.28/5,140.68 = 2,153.88/x
  3. Step 3: Cross multiply
    3,725.28x = 5,140.68 × 2,153.88
  4. Step 4: Simplify right side
    3,725.28x = 11,072,407.84
  5. Step 5: Solve for x
    x = 11,072,407.84/3,725.28
  6. Step 6: Final answer
    x = 2,972.24

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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.