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Finding the Fourth Proportional to 8,967.84, 12,375.30 and 4,989.12

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Solution

The fourth proportional to 8,967.84, 12,375.30 and 4,989.12 is: 6,884.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,967.84 : 12,375.30 = 4,989.12 : x
  2. Step 2: Convert to fraction form
    8,967.84/12,375.30 = 4,989.12/x
  3. Step 3: Cross multiply
    8,967.84x = 12,375.30 × 4,989.12
  4. Step 4: Simplify right side
    8,967.84x = 61,741,856.74
  5. Step 5: Solve for x
    x = 61,741,856.74/8,967.84
  6. Step 6: Final answer
    x = 6,884.81

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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.