Home / 1,921.52-2,882.24-553.52

Finding the Fourth Proportional to 1,921.52, 2,882.24 and 553.52

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Solution

The fourth proportional to 1,921.52, 2,882.24 and 553.52 is: 830.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.52 : 2,882.24 = 553.52 : x
  2. Step 2: Convert to fraction form
    1,921.52/2,882.24 = 553.52/x
  3. Step 3: Cross multiply
    1,921.52x = 2,882.24 × 553.52
  4. Step 4: Simplify right side
    1,921.52x = 1,595,377.48
  5. Step 5: Solve for x
    x = 1,595,377.48/1,921.52
  6. Step 6: Final answer
    x = 830.27

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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.