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Finding the Fourth Proportional to 2,606.71, 3,910.06 and 1,068.79

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Solution

The fourth proportional to 2,606.71, 3,910.06 and 1,068.79 is: 1,603.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,606.71 : 3,910.06 = 1,068.79 : x
  2. Step 2: Convert to fraction form
    2,606.71/3,910.06 = 1,068.79/x
  3. Step 3: Cross multiply
    2,606.71x = 3,910.06 × 1,068.79
  4. Step 4: Simplify right side
    2,606.71x = 4,179,013.48
  5. Step 5: Solve for x
    x = 4,179,013.48/2,606.71
  6. Step 6: Final answer
    x = 1,603.18

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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.