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Finding the Fourth Proportional to 8,861.68, 13,294.68 and 2,621.64

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Solution

The fourth proportional to 8,861.68, 13,294.68 and 2,621.64 is: 3,933.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.68 : 13,294.68 = 2,621.64 : x
  2. Step 2: Convert to fraction form
    8,861.68/13,294.68 = 2,621.64/x
  3. Step 3: Cross multiply
    8,861.68x = 13,294.68 × 2,621.64
  4. Step 4: Simplify right side
    8,861.68x = 34,853,864.88
  5. Step 5: Solve for x
    x = 34,853,864.88/8,861.68
  6. Step 6: Final answer
    x = 3,933.10

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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.