Home / 1,120.17-1,677.66-1,081.25

Finding the Fourth Proportional to 1,120.17, 1,677.66 and 1,081.25

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Solution

The fourth proportional to 1,120.17, 1,677.66 and 1,081.25 is: 1,619.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.17 : 1,677.66 = 1,081.25 : x
  2. Step 2: Convert to fraction form
    1,120.17/1,677.66 = 1,081.25/x
  3. Step 3: Cross multiply
    1,120.17x = 1,677.66 × 1,081.25
  4. Step 4: Simplify right side
    1,120.17x = 1,813,962.96
  5. Step 5: Solve for x
    x = 1,813,962.96/1,120.17
  6. Step 6: Final answer
    x = 1,619.36

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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.