Home / 1,528.13-2,292.20-748.78

Finding the Fourth Proportional to 1,528.13, 2,292.20 and 748.78

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Solution

The fourth proportional to 1,528.13, 2,292.20 and 748.78 is: 1,123.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.13 : 2,292.20 = 748.78 : x
  2. Step 2: Convert to fraction form
    1,528.13/2,292.20 = 748.78/x
  3. Step 3: Cross multiply
    1,528.13x = 2,292.20 × 748.78
  4. Step 4: Simplify right side
    1,528.13x = 1,716,353.52
  5. Step 5: Solve for x
    x = 1,716,353.52/1,528.13
  6. Step 6: Final answer
    x = 1,123.17

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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.