Home / 2,691.28-4,037.40-1,048.72

Finding the Fourth Proportional to 2,691.28, 4,037.40 and 1,048.72

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Solution

The fourth proportional to 2,691.28, 4,037.40 and 1,048.72 is: 1,573.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.28 : 4,037.40 = 1,048.72 : x
  2. Step 2: Convert to fraction form
    2,691.28/4,037.40 = 1,048.72/x
  3. Step 3: Cross multiply
    2,691.28x = 4,037.40 × 1,048.72
  4. Step 4: Simplify right side
    2,691.28x = 4,234,102.13
  5. Step 5: Solve for x
    x = 4,234,102.13/2,691.28
  6. Step 6: Final answer
    x = 1,573.27

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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.