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Finding the Fourth Proportional to 2,972.62, 4,104.10 and 1,910.88

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Solution

The fourth proportional to 2,972.62, 4,104.10 and 1,910.88 is: 2,638.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.62 : 4,104.10 = 1,910.88 : x
  2. Step 2: Convert to fraction form
    2,972.62/4,104.10 = 1,910.88/x
  3. Step 3: Cross multiply
    2,972.62x = 4,104.10 × 1,910.88
  4. Step 4: Simplify right side
    2,972.62x = 7,842,442.61
  5. Step 5: Solve for x
    x = 7,842,442.61/2,972.62
  6. Step 6: Final answer
    x = 2,638.23

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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.