Home / 2,146.91-2,961.68-1,351.22

Finding the Fourth Proportional to 2,146.91, 2,961.68 and 1,351.22

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Solution

The fourth proportional to 2,146.91, 2,961.68 and 1,351.22 is: 1,864.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.91 : 2,961.68 = 1,351.22 : x
  2. Step 2: Convert to fraction form
    2,146.91/2,961.68 = 1,351.22/x
  3. Step 3: Cross multiply
    2,146.91x = 2,961.68 × 1,351.22
  4. Step 4: Simplify right side
    2,146.91x = 4,001,859.69
  5. Step 5: Solve for x
    x = 4,001,859.69/2,146.91
  6. Step 6: Final answer
    x = 1,864.01

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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.