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Finding the Fourth Proportional to 2,908.92, 4,361.49 and 1,242.18

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Solution

The fourth proportional to 2,908.92, 4,361.49 and 1,242.18 is: 1,862.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.92 : 4,361.49 = 1,242.18 : x
  2. Step 2: Convert to fraction form
    2,908.92/4,361.49 = 1,242.18/x
  3. Step 3: Cross multiply
    2,908.92x = 4,361.49 × 1,242.18
  4. Step 4: Simplify right side
    2,908.92x = 5,417,755.65
  5. Step 5: Solve for x
    x = 5,417,755.65/2,908.92
  6. Step 6: Final answer
    x = 1,862.46

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1.5x scale

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.