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Finding the Fourth Proportional to 2,247.88, 3,102 and 1,253.20

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Solution

The fourth proportional to 2,247.88, 3,102 and 1,253.20 is: 1,729.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,247.88 : 3,102 = 1,253.20 : x
  2. Step 2: Convert to fraction form
    2,247.88/3,102 = 1,253.20/x
  3. Step 3: Cross multiply
    2,247.88x = 3,102 × 1,253.20
  4. Step 4: Simplify right side
    2,247.88x = 3,887,426.40
  5. Step 5: Solve for x
    x = 3,887,426.40/2,247.88
  6. Step 6: Final answer
    x = 1,729.37

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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.