Home / 3,609.09-4,981.38-2,117.49

Finding the Fourth Proportional to 3,609.09, 4,981.38 and 2,117.49

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Solution

The fourth proportional to 3,609.09, 4,981.38 and 2,117.49 is: 2,922.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.09 : 4,981.38 = 2,117.49 : x
  2. Step 2: Convert to fraction form
    3,609.09/4,981.38 = 2,117.49/x
  3. Step 3: Cross multiply
    3,609.09x = 4,981.38 × 2,117.49
  4. Step 4: Simplify right side
    3,609.09x = 10,548,035.65
  5. Step 5: Solve for x
    x = 10,548,035.65/3,609.09
  6. Step 6: Final answer
    x = 2,922.63

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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.