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Finding the Fourth Proportional to 2,874.15, 3,965.81 and 1,695.15

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Solution

The fourth proportional to 2,874.15, 3,965.81 and 1,695.15 is: 2,339.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.15 : 3,965.81 = 1,695.15 : x
  2. Step 2: Convert to fraction form
    2,874.15/3,965.81 = 1,695.15/x
  3. Step 3: Cross multiply
    2,874.15x = 3,965.81 × 1,695.15
  4. Step 4: Simplify right side
    2,874.15x = 6,722,634.35
  5. Step 5: Solve for x
    x = 6,722,634.35/2,874.15
  6. Step 6: Final answer
    x = 2,339.00

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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.