Home / 8,867.20-12,226.88-6,978.88

Finding the Fourth Proportional to 8,867.20, 12,226.88 and 6,978.88

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Solution

The fourth proportional to 8,867.20, 12,226.88 and 6,978.88 is: 9,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.20 : 12,226.88 = 6,978.88 : x
  2. Step 2: Convert to fraction form
    8,867.20/12,226.88 = 6,978.88/x
  3. Step 3: Cross multiply
    8,867.20x = 12,226.88 × 6,978.88
  4. Step 4: Simplify right side
    8,867.20x = 85,329,928.29
  5. Step 5: Solve for x
    x = 85,329,928.29/8,867.20
  6. Step 6: Final answer
    x = 9,623.10

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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.