Home / 2,132.62-2,942.01-1,247.88

Finding the Fourth Proportional to 2,132.62, 2,942.01 and 1,247.88

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Solution

The fourth proportional to 2,132.62, 2,942.01 and 1,247.88 is: 1,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.62 : 2,942.01 = 1,247.88 : x
  2. Step 2: Convert to fraction form
    2,132.62/2,942.01 = 1,247.88/x
  3. Step 3: Cross multiply
    2,132.62x = 2,942.01 × 1,247.88
  4. Step 4: Simplify right side
    2,132.62x = 3,671,275.44
  5. Step 5: Solve for x
    x = 3,671,275.44/2,132.62
  6. Step 6: Final answer
    x = 1,721.49

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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.