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Finding the Fourth Proportional to 3,617.92, 4,986.78 and 2,422.49

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Solution

The fourth proportional to 3,617.92, 4,986.78 and 2,422.49 is: 3,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.92 : 4,986.78 = 2,422.49 : x
  2. Step 2: Convert to fraction form
    3,617.92/4,986.78 = 2,422.49/x
  3. Step 3: Cross multiply
    3,617.92x = 4,986.78 × 2,422.49
  4. Step 4: Simplify right side
    3,617.92x = 12,080,424.68
  5. Step 5: Solve for x
    x = 12,080,424.68/3,617.92
  6. Step 6: Final answer
    x = 3,339.05

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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.