Home / 2,127.28-3,192.30-759.28

Finding the Fourth Proportional to 2,127.28, 3,192.30 and 759.28

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Solution

The fourth proportional to 2,127.28, 3,192.30 and 759.28 is: 1,139.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.28 : 3,192.30 = 759.28 : x
  2. Step 2: Convert to fraction form
    2,127.28/3,192.30 = 759.28/x
  3. Step 3: Cross multiply
    2,127.28x = 3,192.30 × 759.28
  4. Step 4: Simplify right side
    2,127.28x = 2,423,849.54
  5. Step 5: Solve for x
    x = 2,423,849.54/2,127.28
  6. Step 6: Final answer
    x = 1,139.41

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1.5x scale

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.