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Finding the Fourth Proportional to 3,279.64, 4,894.25 and 2,929.31

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Solution

The fourth proportional to 3,279.64, 4,894.25 and 2,929.31 is: 4,371.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.64 : 4,894.25 = 2,929.31 : x
  2. Step 2: Convert to fraction form
    3,279.64/4,894.25 = 2,929.31/x
  3. Step 3: Cross multiply
    3,279.64x = 4,894.25 × 2,929.31
  4. Step 4: Simplify right side
    3,279.64x = 14,336,775.47
  5. Step 5: Solve for x
    x = 14,336,775.47/3,279.64
  6. Step 6: Final answer
    x = 4,371.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.