Home / 2,260.80-3,110.40-2,131.20

Finding the Fourth Proportional to 2,260.80, 3,110.40 and 2,131.20

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Solution

The fourth proportional to 2,260.80, 3,110.40 and 2,131.20 is: 2,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.80 : 3,110.40 = 2,131.20 : x
  2. Step 2: Convert to fraction form
    2,260.80/3,110.40 = 2,131.20/x
  3. Step 3: Cross multiply
    2,260.80x = 3,110.40 × 2,131.20
  4. Step 4: Simplify right side
    2,260.80x = 6,628,884.48
  5. Step 5: Solve for x
    x = 6,628,884.48/2,260.80
  6. Step 6: Final answer
    x = 2,932.10

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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.