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Finding the Fourth Proportional to 2,657.92, 4,002.40 and 1,969.47

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Solution

The fourth proportional to 2,657.92, 4,002.40 and 1,969.47 is: 2,965.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.92 : 4,002.40 = 1,969.47 : x
  2. Step 2: Convert to fraction form
    2,657.92/4,002.40 = 1,969.47/x
  3. Step 3: Cross multiply
    2,657.92x = 4,002.40 × 1,969.47
  4. Step 4: Simplify right side
    2,657.92x = 7,882,606.73
  5. Step 5: Solve for x
    x = 7,882,606.73/2,657.92
  6. Step 6: Final answer
    x = 2,965.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.