Home / 8,165.20-12,241.80-2,615.36

Finding the Fourth Proportional to 8,165.20, 12,241.80 and 2,615.36

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Solution

The fourth proportional to 8,165.20, 12,241.80 and 2,615.36 is: 3,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.20 : 12,241.80 = 2,615.36 : x
  2. Step 2: Convert to fraction form
    8,165.20/12,241.80 = 2,615.36/x
  3. Step 3: Cross multiply
    8,165.20x = 12,241.80 × 2,615.36
  4. Step 4: Simplify right side
    8,165.20x = 32,016,714.05
  5. Step 5: Solve for x
    x = 32,016,714.05/8,165.20
  6. Step 6: Final answer
    x = 3,921.12

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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.