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Finding the Fourth Proportional to 2,397.97, 3,308.56 and 1,981.81

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Solution

The fourth proportional to 2,397.97, 3,308.56 and 1,981.81 is: 2,734.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,397.97 : 3,308.56 = 1,981.81 : x
  2. Step 2: Convert to fraction form
    2,397.97/3,308.56 = 1,981.81/x
  3. Step 3: Cross multiply
    2,397.97x = 3,308.56 × 1,981.81
  4. Step 4: Simplify right side
    2,397.97x = 6,556,937.29
  5. Step 5: Solve for x
    x = 6,556,937.29/2,397.97
  6. Step 6: Final answer
    x = 2,734.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.