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Finding the Fourth Proportional to 2,897.43, 4,338.42 and 1,974.80

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Solution

The fourth proportional to 2,897.43, 4,338.42 and 1,974.80 is: 2,956.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,897.43 : 4,338.42 = 1,974.80 : x
  2. Step 2: Convert to fraction form
    2,897.43/4,338.42 = 1,974.80/x
  3. Step 3: Cross multiply
    2,897.43x = 4,338.42 × 1,974.80
  4. Step 4: Simplify right side
    2,897.43x = 8,567,490.12
  5. Step 5: Solve for x
    x = 8,567,490.12/2,897.43
  6. Step 6: Final answer
    x = 2,956.93

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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.