Home / 1,517.70-2,278.44-1,109.46

Finding the Fourth Proportional to 1,517.70, 2,278.44 and 1,109.46

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Solution

The fourth proportional to 1,517.70, 2,278.44 and 1,109.46 is: 1,665.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.70 : 2,278.44 = 1,109.46 : x
  2. Step 2: Convert to fraction form
    1,517.70/2,278.44 = 1,109.46/x
  3. Step 3: Cross multiply
    1,517.70x = 2,278.44 × 1,109.46
  4. Step 4: Simplify right side
    1,517.70x = 2,527,838.04
  5. Step 5: Solve for x
    x = 2,527,838.04/1,517.70
  6. Step 6: Final answer
    x = 1,665.57

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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.