Home / 3,515.64-5,273.48-918.60

Finding the Fourth Proportional to 3,515.64, 5,273.48 and 918.60

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Solution

The fourth proportional to 3,515.64, 5,273.48 and 918.60 is: 1,377.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.64 : 5,273.48 = 918.60 : x
  2. Step 2: Convert to fraction form
    3,515.64/5,273.48 = 918.60/x
  3. Step 3: Cross multiply
    3,515.64x = 5,273.48 × 918.60
  4. Step 4: Simplify right side
    3,515.64x = 4,844,218.73
  5. Step 5: Solve for x
    x = 4,844,218.73/3,515.64
  6. Step 6: Final answer
    x = 1,377.91

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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.