Home / 1,921.27-2,881.92-534.64

Finding the Fourth Proportional to 1,921.27, 2,881.92 and 534.64

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Solution

The fourth proportional to 1,921.27, 2,881.92 and 534.64 is: 801.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.27 : 2,881.92 = 534.64 : x
  2. Step 2: Convert to fraction form
    1,921.27/2,881.92 = 534.64/x
  3. Step 3: Cross multiply
    1,921.27x = 2,881.92 × 534.64
  4. Step 4: Simplify right side
    1,921.27x = 1,540,789.71
  5. Step 5: Solve for x
    x = 1,540,789.71/1,921.27
  6. Step 6: Final answer
    x = 801.96

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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.