Home / 3,453.12-5,180.49-987.87

Finding the Fourth Proportional to 3,453.12, 5,180.49 and 987.87

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Solution

The fourth proportional to 3,453.12, 5,180.49 and 987.87 is: 1,482.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.12 : 5,180.49 = 987.87 : x
  2. Step 2: Convert to fraction form
    3,453.12/5,180.49 = 987.87/x
  3. Step 3: Cross multiply
    3,453.12x = 5,180.49 × 987.87
  4. Step 4: Simplify right side
    3,453.12x = 5,117,650.66
  5. Step 5: Solve for x
    x = 5,117,650.66/3,453.12
  6. Step 6: Final answer
    x = 1,482.04

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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.