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Finding the Fourth Proportional to 8,682, 13,023.60 and 4,298.28

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Solution

The fourth proportional to 8,682, 13,023.60 and 4,298.28 is: 6,447.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682 : 13,023.60 = 4,298.28 : x
  2. Step 2: Convert to fraction form
    8,682/13,023.60 = 4,298.28/x
  3. Step 3: Cross multiply
    8,682x = 13,023.60 × 4,298.28
  4. Step 4: Simplify right side
    8,682x = 55,979,079.41
  5. Step 5: Solve for x
    x = 55,979,079.41/8,682
  6. Step 6: Final answer
    x = 6,447.72

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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.