Home / 1,116.29-1,540.44-618.95

Finding the Fourth Proportional to 1,116.29, 1,540.44 and 618.95

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Solution

The fourth proportional to 1,116.29, 1,540.44 and 618.95 is: 854.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.29 : 1,540.44 = 618.95 : x
  2. Step 2: Convert to fraction form
    1,116.29/1,540.44 = 618.95/x
  3. Step 3: Cross multiply
    1,116.29x = 1,540.44 × 618.95
  4. Step 4: Simplify right side
    1,116.29x = 953,455.34
  5. Step 5: Solve for x
    x = 953,455.34/1,116.29
  6. Step 6: Final answer
    x = 854.13

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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.