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Finding the Fourth Proportional to 5,354.60, 8,023.80 and 3,621.20

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Solution

The fourth proportional to 5,354.60, 8,023.80 and 3,621.20 is: 5,426.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,354.60 : 8,023.80 = 3,621.20 : x
  2. Step 2: Convert to fraction form
    5,354.60/8,023.80 = 3,621.20/x
  3. Step 3: Cross multiply
    5,354.60x = 8,023.80 × 3,621.20
  4. Step 4: Simplify right side
    5,354.60x = 29,055,784.56
  5. Step 5: Solve for x
    x = 29,055,784.56/5,354.60
  6. Step 6: Final answer
    x = 5,426.32

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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.