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Finding the Fourth Proportional to 3,388.92, 4,676.17 and 1,972.84

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Solution

The fourth proportional to 3,388.92, 4,676.17 and 1,972.84 is: 2,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.92 : 4,676.17 = 1,972.84 : x
  2. Step 2: Convert to fraction form
    3,388.92/4,676.17 = 1,972.84/x
  3. Step 3: Cross multiply
    3,388.92x = 4,676.17 × 1,972.84
  4. Step 4: Simplify right side
    3,388.92x = 9,225,335.22
  5. Step 5: Solve for x
    x = 9,225,335.22/3,388.92
  6. Step 6: Final answer
    x = 2,722.21

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1.5x scale

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.