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Finding the Fourth Proportional to 8,449.40, 12,682.20 and 4,294.10

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Solution

The fourth proportional to 8,449.40, 12,682.20 and 4,294.10 is: 6,445.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.40 : 12,682.20 = 4,294.10 : x
  2. Step 2: Convert to fraction form
    8,449.40/12,682.20 = 4,294.10/x
  3. Step 3: Cross multiply
    8,449.40x = 12,682.20 × 4,294.10
  4. Step 4: Simplify right side
    8,449.40x = 54,458,635.02
  5. Step 5: Solve for x
    x = 54,458,635.02/8,449.40
  6. Step 6: Final answer
    x = 6,445.27

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1.5x scale

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.