Home / 1,118.46-1,675.29-1,087.74

Finding the Fourth Proportional to 1,118.46, 1,675.29 and 1,087.74

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Solution

The fourth proportional to 1,118.46, 1,675.29 and 1,087.74 is: 1,629.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.46 : 1,675.29 = 1,087.74 : x
  2. Step 2: Convert to fraction form
    1,118.46/1,675.29 = 1,087.74/x
  3. Step 3: Cross multiply
    1,118.46x = 1,675.29 × 1,087.74
  4. Step 4: Simplify right side
    1,118.46x = 1,822,279.94
  5. Step 5: Solve for x
    x = 1,822,279.94/1,118.46
  6. Step 6: Final answer
    x = 1,629.28

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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.