Home / 1,372.18-2,058.06-398.08

Finding the Fourth Proportional to 1,372.18, 2,058.06 and 398.08

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Solution

The fourth proportional to 1,372.18, 2,058.06 and 398.08 is: 597.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.18 : 2,058.06 = 398.08 : x
  2. Step 2: Convert to fraction form
    1,372.18/2,058.06 = 398.08/x
  3. Step 3: Cross multiply
    1,372.18x = 2,058.06 × 398.08
  4. Step 4: Simplify right side
    1,372.18x = 819,272.52
  5. Step 5: Solve for x
    x = 819,272.52/1,372.18
  6. Step 6: Final answer
    x = 597.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.