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Finding the Fourth Proportional to 6,487.68, 9,732.88 and 2,104.79

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Solution

The fourth proportional to 6,487.68, 9,732.88 and 2,104.79 is: 3,157.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.68 : 9,732.88 = 2,104.79 : x
  2. Step 2: Convert to fraction form
    6,487.68/9,732.88 = 2,104.79/x
  3. Step 3: Cross multiply
    6,487.68x = 9,732.88 × 2,104.79
  4. Step 4: Simplify right side
    6,487.68x = 20,485,668.50
  5. Step 5: Solve for x
    x = 20,485,668.50/6,487.68
  6. Step 6: Final answer
    x = 3,157.63

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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.