Home / 8,261.10-12,380.38-3,513.30

Finding the Fourth Proportional to 8,261.10, 12,380.38 and 3,513.30

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Solution

The fourth proportional to 8,261.10, 12,380.38 and 3,513.30 is: 5,265.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.10 : 12,380.38 = 3,513.30 : x
  2. Step 2: Convert to fraction form
    8,261.10/12,380.38 = 3,513.30/x
  3. Step 3: Cross multiply
    8,261.10x = 12,380.38 × 3,513.30
  4. Step 4: Simplify right side
    8,261.10x = 43,495,989.05
  5. Step 5: Solve for x
    x = 43,495,989.05/8,261.10
  6. Step 6: Final answer
    x = 5,265.16

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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.