Home / 8,278.22-12,419.89-2,869.05

Finding the Fourth Proportional to 8,278.22, 12,419.89 and 2,869.05

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Solution

The fourth proportional to 8,278.22, 12,419.89 and 2,869.05 is: 4,304.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.22 : 12,419.89 = 2,869.05 : x
  2. Step 2: Convert to fraction form
    8,278.22/12,419.89 = 2,869.05/x
  3. Step 3: Cross multiply
    8,278.22x = 12,419.89 × 2,869.05
  4. Step 4: Simplify right side
    8,278.22x = 35,633,271.08
  5. Step 5: Solve for x
    x = 35,633,271.08/8,278.22
  6. Step 6: Final answer
    x = 4,304.46

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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.