Home / 1,179.75-1,635.31-1,160.15

Finding the Fourth Proportional to 1,179.75, 1,635.31 and 1,160.15

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Solution

The fourth proportional to 1,179.75, 1,635.31 and 1,160.15 is: 1,608.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.75 : 1,635.31 = 1,160.15 : x
  2. Step 2: Convert to fraction form
    1,179.75/1,635.31 = 1,160.15/x
  3. Step 3: Cross multiply
    1,179.75x = 1,635.31 × 1,160.15
  4. Step 4: Simplify right side
    1,179.75x = 1,897,198.17
  5. Step 5: Solve for x
    x = 1,897,198.17/1,179.75
  6. Step 6: Final answer
    x = 1,608.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.