Home / 1,340.74-2,011.52-1,108.57

Finding the Fourth Proportional to 1,340.74, 2,011.52 and 1,108.57

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Solution

The fourth proportional to 1,340.74, 2,011.52 and 1,108.57 is: 1,663.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.74 : 2,011.52 = 1,108.57 : x
  2. Step 2: Convert to fraction form
    1,340.74/2,011.52 = 1,108.57/x
  3. Step 3: Cross multiply
    1,340.74x = 2,011.52 × 1,108.57
  4. Step 4: Simplify right side
    1,340.74x = 2,229,910.73
  5. Step 5: Solve for x
    x = 2,229,910.73/1,340.74
  6. Step 6: Final answer
    x = 1,663.19

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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.