Home / 1,489.97-2,058.14-1,242.11

Finding the Fourth Proportional to 1,489.97, 2,058.14 and 1,242.11

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Solution

The fourth proportional to 1,489.97, 2,058.14 and 1,242.11 is: 1,715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.97 : 2,058.14 = 1,242.11 : x
  2. Step 2: Convert to fraction form
    1,489.97/2,058.14 = 1,242.11/x
  3. Step 3: Cross multiply
    1,489.97x = 2,058.14 × 1,242.11
  4. Step 4: Simplify right side
    1,489.97x = 2,556,436.28
  5. Step 5: Solve for x
    x = 2,556,436.28/1,489.97
  6. Step 6: Final answer
    x = 1,715.76

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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.