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Finding the Fourth Proportional to 6,449.56, 9,685.84 and 5,281.80

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Solution

The fourth proportional to 6,449.56, 9,685.84 and 5,281.80 is: 7,932.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449.56 : 9,685.84 = 5,281.80 : x
  2. Step 2: Convert to fraction form
    6,449.56/9,685.84 = 5,281.80/x
  3. Step 3: Cross multiply
    6,449.56x = 9,685.84 × 5,281.80
  4. Step 4: Simplify right side
    6,449.56x = 51,158,669.71
  5. Step 5: Solve for x
    x = 51,158,669.71/6,449.56
  6. Step 6: Final answer
    x = 7,932.12

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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.