Home / 1,921.20-2,882.24-622.66

Finding the Fourth Proportional to 1,921.20, 2,882.24 and 622.66

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Solution

The fourth proportional to 1,921.20, 2,882.24 and 622.66 is: 934.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.20 : 2,882.24 = 622.66 : x
  2. Step 2: Convert to fraction form
    1,921.20/2,882.24 = 622.66/x
  3. Step 3: Cross multiply
    1,921.20x = 2,882.24 × 622.66
  4. Step 4: Simplify right side
    1,921.20x = 1,794,655.56
  5. Step 5: Solve for x
    x = 1,794,655.56/1,921.20
  6. Step 6: Final answer
    x = 934.13

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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.