Home / 1,101.80-1,522.09-1,089.96

Finding the Fourth Proportional to 1,101.80, 1,522.09 and 1,089.96

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Solution

The fourth proportional to 1,101.80, 1,522.09 and 1,089.96 is: 1,505.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.80 : 1,522.09 = 1,089.96 : x
  2. Step 2: Convert to fraction form
    1,101.80/1,522.09 = 1,089.96/x
  3. Step 3: Cross multiply
    1,101.80x = 1,522.09 × 1,089.96
  4. Step 4: Simplify right side
    1,101.80x = 1,659,012.87
  5. Step 5: Solve for x
    x = 1,659,012.87/1,101.80
  6. Step 6: Final answer
    x = 1,505.73

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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.