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Finding the Fourth Proportional to 8,739.89, 13,098.89 and 6,883.67

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Solution

The fourth proportional to 8,739.89, 13,098.89 and 6,883.67 is: 10,316.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.89 : 13,098.89 = 6,883.67 : x
  2. Step 2: Convert to fraction form
    8,739.89/13,098.89 = 6,883.67/x
  3. Step 3: Cross multiply
    8,739.89x = 13,098.89 × 6,883.67
  4. Step 4: Simplify right side
    8,739.89x = 90,168,436.13
  5. Step 5: Solve for x
    x = 90,168,436.13/8,739.89
  6. Step 6: Final answer
    x = 10,316.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.