Home / 8,872.05-12,230.71-6,980.36

Finding the Fourth Proportional to 8,872.05, 12,230.71 and 6,980.36

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Solution

The fourth proportional to 8,872.05, 12,230.71 and 6,980.36 is: 9,622.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.05 : 12,230.71 = 6,980.36 : x
  2. Step 2: Convert to fraction form
    8,872.05/12,230.71 = 6,980.36/x
  3. Step 3: Cross multiply
    8,872.05x = 12,230.71 × 6,980.36
  4. Step 4: Simplify right side
    8,872.05x = 85,374,680.25
  5. Step 5: Solve for x
    x = 85,374,680.25/8,872.05
  6. Step 6: Final answer
    x = 9,622.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.