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Finding the Fourth Proportional to 2,886.72, 3,983.52 and 1,767.30

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Solution

The fourth proportional to 2,886.72, 3,983.52 and 1,767.30 is: 2,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.72 : 3,983.52 = 1,767.30 : x
  2. Step 2: Convert to fraction form
    2,886.72/3,983.52 = 1,767.30/x
  3. Step 3: Cross multiply
    2,886.72x = 3,983.52 × 1,767.30
  4. Step 4: Simplify right side
    2,886.72x = 7,040,074.90
  5. Step 5: Solve for x
    x = 7,040,074.90/2,886.72
  6. Step 6: Final answer
    x = 2,438.78

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