Home / 8,564.12-12,844.56-2,720.78

Finding the Fourth Proportional to 8,564.12, 12,844.56 and 2,720.78

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Solution

The fourth proportional to 8,564.12, 12,844.56 and 2,720.78 is: 4,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,564.12 : 12,844.56 = 2,720.78 : x
  2. Step 2: Convert to fraction form
    8,564.12/12,844.56 = 2,720.78/x
  3. Step 3: Cross multiply
    8,564.12x = 12,844.56 × 2,720.78
  4. Step 4: Simplify right side
    8,564.12x = 34,947,221.96
  5. Step 5: Solve for x
    x = 34,947,221.96/8,564.12
  6. Step 6: Final answer
    x = 4,080.66

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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.