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Finding the Fourth Proportional to 2,997.12, 4,133.76 and 1,949.76

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Solution

The fourth proportional to 2,997.12, 4,133.76 and 1,949.76 is: 2,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.12 : 4,133.76 = 1,949.76 : x
  2. Step 2: Convert to fraction form
    2,997.12/4,133.76 = 1,949.76/x
  3. Step 3: Cross multiply
    2,997.12x = 4,133.76 × 1,949.76
  4. Step 4: Simplify right side
    2,997.12x = 8,059,839.90
  5. Step 5: Solve for x
    x = 8,059,839.90/2,997.12
  6. Step 6: Final answer
    x = 2,689.19

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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.