Home / 1,114.28-1,537.67-616.90

Finding the Fourth Proportional to 1,114.28, 1,537.67 and 616.90

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Solution

The fourth proportional to 1,114.28, 1,537.67 and 616.90 is: 851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114.28 : 1,537.67 = 616.90 : x
  2. Step 2: Convert to fraction form
    1,114.28/1,537.67 = 616.90/x
  3. Step 3: Cross multiply
    1,114.28x = 1,537.67 × 616.90
  4. Step 4: Simplify right side
    1,114.28x = 948,588.62
  5. Step 5: Solve for x
    x = 948,588.62/1,114.28
  6. Step 6: Final answer
    x = 851.30

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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.