Home / 8,278.19-12,419.36-2,731.85

Finding the Fourth Proportional to 8,278.19, 12,419.36 and 2,731.85

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Solution

The fourth proportional to 8,278.19, 12,419.36 and 2,731.85 is: 4,098.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.19 : 12,419.36 = 2,731.85 : x
  2. Step 2: Convert to fraction form
    8,278.19/12,419.36 = 2,731.85/x
  3. Step 3: Cross multiply
    8,278.19x = 12,419.36 × 2,731.85
  4. Step 4: Simplify right side
    8,278.19x = 33,927,814.96
  5. Step 5: Solve for x
    x = 33,927,814.96/8,278.19
  6. Step 6: Final answer
    x = 4,098.46

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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.