Home / 1,527.28-2,107.92-1,085.20

Finding the Fourth Proportional to 1,527.28, 2,107.92 and 1,085.20

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Solution

The fourth proportional to 1,527.28, 2,107.92 and 1,085.20 is: 1,497.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.28 : 2,107.92 = 1,085.20 : x
  2. Step 2: Convert to fraction form
    1,527.28/2,107.92 = 1,085.20/x
  3. Step 3: Cross multiply
    1,527.28x = 2,107.92 × 1,085.20
  4. Step 4: Simplify right side
    1,527.28x = 2,287,514.78
  5. Step 5: Solve for x
    x = 2,287,514.78/1,527.28
  6. Step 6: Final answer
    x = 1,497.77

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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.