Home / 3,445.80-5,163.30-2,981.40

Finding the Fourth Proportional to 3,445.80, 5,163.30 and 2,981.40

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Solution

The fourth proportional to 3,445.80, 5,163.30 and 2,981.40 is: 4,467.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.80 : 5,163.30 = 2,981.40 : x
  2. Step 2: Convert to fraction form
    3,445.80/5,163.30 = 2,981.40/x
  3. Step 3: Cross multiply
    3,445.80x = 5,163.30 × 2,981.40
  4. Step 4: Simplify right side
    3,445.80x = 15,393,862.62
  5. Step 5: Solve for x
    x = 15,393,862.62/3,445.80
  6. Step 6: Final answer
    x = 4,467.43

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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.