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Finding the Fourth Proportional to 2,695.74, 3,710.50 and 1,908.42

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Solution

The fourth proportional to 2,695.74, 3,710.50 and 1,908.42 is: 2,626.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.74 : 3,710.50 = 1,908.42 : x
  2. Step 2: Convert to fraction form
    2,695.74/3,710.50 = 1,908.42/x
  3. Step 3: Cross multiply
    2,695.74x = 3,710.50 × 1,908.42
  4. Step 4: Simplify right side
    2,695.74x = 7,081,192.41
  5. Step 5: Solve for x
    x = 7,081,192.41/2,695.74
  6. Step 6: Final answer
    x = 2,626.81

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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.