Home / 5,445.20-8,168.90-2,158.41

Finding the Fourth Proportional to 5,445.20, 8,168.90 and 2,158.41

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Solution

The fourth proportional to 5,445.20, 8,168.90 and 2,158.41 is: 3,238.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.20 : 8,168.90 = 2,158.41 : x
  2. Step 2: Convert to fraction form
    5,445.20/8,168.90 = 2,158.41/x
  3. Step 3: Cross multiply
    5,445.20x = 8,168.90 × 2,158.41
  4. Step 4: Simplify right side
    5,445.20x = 17,631,824.66
  5. Step 5: Solve for x
    x = 17,631,824.66/5,445.20
  6. Step 6: Final answer
    x = 3,238.05

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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.