Home / 3,240.09-4,469.92-1,981.20

Finding the Fourth Proportional to 3,240.09, 4,469.92 and 1,981.20

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Solution

The fourth proportional to 3,240.09, 4,469.92 and 1,981.20 is: 2,733.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.09 : 4,469.92 = 1,981.20 : x
  2. Step 2: Convert to fraction form
    3,240.09/4,469.92 = 1,981.20/x
  3. Step 3: Cross multiply
    3,240.09x = 4,469.92 × 1,981.20
  4. Step 4: Simplify right side
    3,240.09x = 8,855,800.55
  5. Step 5: Solve for x
    x = 8,855,800.55/3,240.09
  6. Step 6: Final answer
    x = 2,733.19

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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.