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Finding the Fourth Proportional to 6,489.56, 9,727.32 and 2,589.68

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Solution

The fourth proportional to 6,489.56, 9,727.32 and 2,589.68 is: 3,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489.56 : 9,727.32 = 2,589.68 : x
  2. Step 2: Convert to fraction form
    6,489.56/9,727.32 = 2,589.68/x
  3. Step 3: Cross multiply
    6,489.56x = 9,727.32 × 2,589.68
  4. Step 4: Simplify right side
    6,489.56x = 25,190,646.06
  5. Step 5: Solve for x
    x = 25,190,646.06/6,489.56
  6. Step 6: Final answer
    x = 3,881.72

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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.