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Finding the Fourth Proportional to 1,908.84, 2,864.10 and 935.88

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Solution

The fourth proportional to 1,908.84, 2,864.10 and 935.88 is: 1,404.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.84 : 2,864.10 = 935.88 : x
  2. Step 2: Convert to fraction form
    1,908.84/2,864.10 = 935.88/x
  3. Step 3: Cross multiply
    1,908.84x = 2,864.10 × 935.88
  4. Step 4: Simplify right side
    1,908.84x = 2,680,453.91
  5. Step 5: Solve for x
    x = 2,680,453.91/1,908.84
  6. Step 6: Final answer
    x = 1,404.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.