Home / 3,618.14-4,990.21-2,422.75

Finding the Fourth Proportional to 3,618.14, 4,990.21 and 2,422.75

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Solution

The fourth proportional to 3,618.14, 4,990.21 and 2,422.75 is: 3,341.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.14 : 4,990.21 = 2,422.75 : x
  2. Step 2: Convert to fraction form
    3,618.14/4,990.21 = 2,422.75/x
  3. Step 3: Cross multiply
    3,618.14x = 4,990.21 × 2,422.75
  4. Step 4: Simplify right side
    3,618.14x = 12,090,006.33
  5. Step 5: Solve for x
    x = 12,090,006.33/3,618.14
  6. Step 6: Final answer
    x = 3,341.50

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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.