Home / 3,121.24-4,301.39-2,235.51

Finding the Fourth Proportional to 3,121.24, 4,301.39 and 2,235.51

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Solution

The fourth proportional to 3,121.24, 4,301.39 and 2,235.51 is: 3,080.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.24 : 4,301.39 = 2,235.51 : x
  2. Step 2: Convert to fraction form
    3,121.24/4,301.39 = 2,235.51/x
  3. Step 3: Cross multiply
    3,121.24x = 4,301.39 × 2,235.51
  4. Step 4: Simplify right side
    3,121.24x = 9,615,767.67
  5. Step 5: Solve for x
    x = 9,615,767.67/3,121.24
  6. Step 6: Final answer
    x = 3,080.75

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Double scale
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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.