Home / 2,331.08-3,218.10-1,981.16

Finding the Fourth Proportional to 2,331.08, 3,218.10 and 1,981.16

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Solution

The fourth proportional to 2,331.08, 3,218.10 and 1,981.16 is: 2,735.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.08 : 3,218.10 = 1,981.16 : x
  2. Step 2: Convert to fraction form
    2,331.08/3,218.10 = 1,981.16/x
  3. Step 3: Cross multiply
    2,331.08x = 3,218.10 × 1,981.16
  4. Step 4: Simplify right side
    2,331.08x = 6,375,571.00
  5. Step 5: Solve for x
    x = 6,375,571.00/2,331.08
  6. Step 6: Final answer
    x = 2,735.03

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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.