Home / 1,042.72-1,562.26-929.73

Finding the Fourth Proportional to 1,042.72, 1,562.26 and 929.73

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Solution

The fourth proportional to 1,042.72, 1,562.26 and 929.73 is: 1,392.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.72 : 1,562.26 = 929.73 : x
  2. Step 2: Convert to fraction form
    1,042.72/1,562.26 = 929.73/x
  3. Step 3: Cross multiply
    1,042.72x = 1,562.26 × 929.73
  4. Step 4: Simplify right side
    1,042.72x = 1,452,479.99
  5. Step 5: Solve for x
    x = 1,452,479.99/1,042.72
  6. Step 6: Final answer
    x = 1,392.97

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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.