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Finding the Fourth Proportional to 1,410.40, 1,937.27 and 1,248.40

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Solution

The fourth proportional to 1,410.40, 1,937.27 and 1,248.40 is: 1,714.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.40 : 1,937.27 = 1,248.40 : x
  2. Step 2: Convert to fraction form
    1,410.40/1,937.27 = 1,248.40/x
  3. Step 3: Cross multiply
    1,410.40x = 1,937.27 × 1,248.40
  4. Step 4: Simplify right side
    1,410.40x = 2,418,487.87
  5. Step 5: Solve for x
    x = 2,418,487.87/1,410.40
  6. Step 6: Final answer
    x = 1,714.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.