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Finding the Fourth Proportional to 2,695.50, 3,719.79 and 1,867.98

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Solution

The fourth proportional to 2,695.50, 3,719.79 and 1,867.98 is: 2,577.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.50 : 3,719.79 = 1,867.98 : x
  2. Step 2: Convert to fraction form
    2,695.50/3,719.79 = 1,867.98/x
  3. Step 3: Cross multiply
    2,695.50x = 3,719.79 × 1,867.98
  4. Step 4: Simplify right side
    2,695.50x = 6,948,493.32
  5. Step 5: Solve for x
    x = 6,948,493.32/2,695.50
  6. Step 6: Final answer
    x = 2,577.81

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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.