Home / 1,118.18-1,542.57-698.26

Finding the Fourth Proportional to 1,118.18, 1,542.57 and 698.26

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Solution

The fourth proportional to 1,118.18, 1,542.57 and 698.26 is: 963.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.18 : 1,542.57 = 698.26 : x
  2. Step 2: Convert to fraction form
    1,118.18/1,542.57 = 698.26/x
  3. Step 3: Cross multiply
    1,118.18x = 1,542.57 × 698.26
  4. Step 4: Simplify right side
    1,118.18x = 1,077,114.93
  5. Step 5: Solve for x
    x = 1,077,114.93/1,118.18
  6. Step 6: Final answer
    x = 963.28

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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.