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Finding the Fourth Proportional to 1,908.79, 2,628.28 and 1,671.41

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Solution

The fourth proportional to 1,908.79, 2,628.28 and 1,671.41 is: 2,301.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.79 : 2,628.28 = 1,671.41 : x
  2. Step 2: Convert to fraction form
    1,908.79/2,628.28 = 1,671.41/x
  3. Step 3: Cross multiply
    1,908.79x = 2,628.28 × 1,671.41
  4. Step 4: Simplify right side
    1,908.79x = 4,392,942.13
  5. Step 5: Solve for x
    x = 4,392,942.13/1,908.79
  6. Step 6: Final answer
    x = 2,301.43

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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.