Home / 3,725.28-5,139.72-2,782.44

Finding the Fourth Proportional to 3,725.28, 5,139.72 and 2,782.44

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Solution

The fourth proportional to 3,725.28, 5,139.72 and 2,782.44 is: 3,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,725.28 : 5,139.72 = 2,782.44 : x
  2. Step 2: Convert to fraction form
    3,725.28/5,139.72 = 2,782.44/x
  3. Step 3: Cross multiply
    3,725.28x = 5,139.72 × 2,782.44
  4. Step 4: Simplify right side
    3,725.28x = 14,300,962.52
  5. Step 5: Solve for x
    x = 14,300,962.52/3,725.28
  6. Step 6: Final answer
    x = 3,838.90

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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.