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Finding the Fourth Proportional to 6,618.68, 9,928.20 and 2,001.68

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Solution

The fourth proportional to 6,618.68, 9,928.20 and 2,001.68 is: 3,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.68 : 9,928.20 = 2,001.68 : x
  2. Step 2: Convert to fraction form
    6,618.68/9,928.20 = 2,001.68/x
  3. Step 3: Cross multiply
    6,618.68x = 9,928.20 × 2,001.68
  4. Step 4: Simplify right side
    6,618.68x = 19,873,079.38
  5. Step 5: Solve for x
    x = 19,873,079.38/6,618.68
  6. Step 6: Final answer
    x = 3,002.57

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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.