Home / 3,515.68-5,273.28-918.56

Finding the Fourth Proportional to 3,515.68, 5,273.28 and 918.56

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Solution

The fourth proportional to 3,515.68, 5,273.28 and 918.56 is: 1,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.68 : 5,273.28 = 918.56 : x
  2. Step 2: Convert to fraction form
    3,515.68/5,273.28 = 918.56/x
  3. Step 3: Cross multiply
    3,515.68x = 5,273.28 × 918.56
  4. Step 4: Simplify right side
    3,515.68x = 4,843,824.08
  5. Step 5: Solve for x
    x = 4,843,824.08/3,515.68
  6. Step 6: Final answer
    x = 1,377.78

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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.