Home / 1,248.33-1,721.25-1,011.63

Finding the Fourth Proportional to 1,248.33, 1,721.25 and 1,011.63

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Solution

The fourth proportional to 1,248.33, 1,721.25 and 1,011.63 is: 1,394.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.33 : 1,721.25 = 1,011.63 : x
  2. Step 2: Convert to fraction form
    1,248.33/1,721.25 = 1,011.63/x
  3. Step 3: Cross multiply
    1,248.33x = 1,721.25 × 1,011.63
  4. Step 4: Simplify right side
    1,248.33x = 1,741,268.14
  5. Step 5: Solve for x
    x = 1,741,268.14/1,248.33
  6. Step 6: Final answer
    x = 1,394.88

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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.