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Finding the Fourth Proportional to 1,888.32, 2,819.92 and 1,791.12

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Solution

The fourth proportional to 1,888.32, 2,819.92 and 1,791.12 is: 2,674.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.32 : 2,819.92 = 1,791.12 : x
  2. Step 2: Convert to fraction form
    1,888.32/2,819.92 = 1,791.12/x
  3. Step 3: Cross multiply
    1,888.32x = 2,819.92 × 1,791.12
  4. Step 4: Simplify right side
    1,888.32x = 5,050,815.11
  5. Step 5: Solve for x
    x = 5,050,815.11/1,888.32
  6. Step 6: Final answer
    x = 2,674.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.