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Finding the Fourth Proportional to 9,318.66, 12,859.98 and 5,069.96

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Solution

The fourth proportional to 9,318.66, 12,859.98 and 5,069.96 is: 6,996.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.66 : 12,859.98 = 5,069.96 : x
  2. Step 2: Convert to fraction form
    9,318.66/12,859.98 = 5,069.96/x
  3. Step 3: Cross multiply
    9,318.66x = 12,859.98 × 5,069.96
  4. Step 4: Simplify right side
    9,318.66x = 65,199,584.20
  5. Step 5: Solve for x
    x = 65,199,584.20/9,318.66
  6. Step 6: Final answer
    x = 6,996.67

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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.