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Finding the Fourth Proportional to 8,695.81, 12,000 and 4,867.39

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Solution

The fourth proportional to 8,695.81, 12,000 and 4,867.39 is: 6,716.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.81 : 12,000 = 4,867.39 : x
  2. Step 2: Convert to fraction form
    8,695.81/12,000 = 4,867.39/x
  3. Step 3: Cross multiply
    8,695.81x = 12,000 × 4,867.39
  4. Step 4: Simplify right side
    8,695.81x = 58,408,680.00
  5. Step 5: Solve for x
    x = 58,408,680.00/8,695.81
  6. Step 6: Final answer
    x = 6,716.88

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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.