Home / 1,248.78-1,721.42-1,027.35

Finding the Fourth Proportional to 1,248.78, 1,721.42 and 1,027.35

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Solution

The fourth proportional to 1,248.78, 1,721.42 and 1,027.35 is: 1,416.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.78 : 1,721.42 = 1,027.35 : x
  2. Step 2: Convert to fraction form
    1,248.78/1,721.42 = 1,027.35/x
  3. Step 3: Cross multiply
    1,248.78x = 1,721.42 × 1,027.35
  4. Step 4: Simplify right side
    1,248.78x = 1,768,500.84
  5. Step 5: Solve for x
    x = 1,768,500.84/1,248.78
  6. Step 6: Final answer
    x = 1,416.18

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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.