Home / 1,107.30-1,527.17-808.55

Finding the Fourth Proportional to 1,107.30, 1,527.17 and 808.55

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Solution

The fourth proportional to 1,107.30, 1,527.17 and 808.55 is: 1,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.30 : 1,527.17 = 808.55 : x
  2. Step 2: Convert to fraction form
    1,107.30/1,527.17 = 808.55/x
  3. Step 3: Cross multiply
    1,107.30x = 1,527.17 × 808.55
  4. Step 4: Simplify right side
    1,107.30x = 1,234,781.62
  5. Step 5: Solve for x
    x = 1,234,781.62/1,107.30
  6. Step 6: Final answer
    x = 1,115.13

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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.