Home / 1,067.60-1,472.20-1,043.76

Finding the Fourth Proportional to 1,067.60, 1,472.20 and 1,043.76

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Solution

The fourth proportional to 1,067.60, 1,472.20 and 1,043.76 is: 1,439.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.60 : 1,472.20 = 1,043.76 : x
  2. Step 2: Convert to fraction form
    1,067.60/1,472.20 = 1,043.76/x
  3. Step 3: Cross multiply
    1,067.60x = 1,472.20 × 1,043.76
  4. Step 4: Simplify right side
    1,067.60x = 1,536,623.47
  5. Step 5: Solve for x
    x = 1,536,623.47/1,067.60
  6. Step 6: Final answer
    x = 1,439.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.