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Finding the Fourth Proportional to 8,621.02, 11,892.99 and 5,432.86

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Solution

The fourth proportional to 8,621.02, 11,892.99 and 5,432.86 is: 7,494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.02 : 11,892.99 = 5,432.86 : x
  2. Step 2: Convert to fraction form
    8,621.02/11,892.99 = 5,432.86/x
  3. Step 3: Cross multiply
    8,621.02x = 11,892.99 × 5,432.86
  4. Step 4: Simplify right side
    8,621.02x = 64,612,949.65
  5. Step 5: Solve for x
    x = 64,612,949.65/8,621.02
  6. Step 6: Final answer
    x = 7,494.81

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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.