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Finding the Fourth Proportional to 2,874.98, 3,965.40 and 1,695.21

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Solution

The fourth proportional to 2,874.98, 3,965.40 and 1,695.21 is: 2,338.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.98 : 3,965.40 = 1,695.21 : x
  2. Step 2: Convert to fraction form
    2,874.98/3,965.40 = 1,695.21/x
  3. Step 3: Cross multiply
    2,874.98x = 3,965.40 × 1,695.21
  4. Step 4: Simplify right side
    2,874.98x = 6,722,185.73
  5. Step 5: Solve for x
    x = 6,722,185.73/2,874.98
  6. Step 6: Final answer
    x = 2,338.17

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1.5x scale

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.