Home / 2,171.07-2,995.09-1,331.43

Finding the Fourth Proportional to 2,171.07, 2,995.09 and 1,331.43

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Solution

The fourth proportional to 2,171.07, 2,995.09 and 1,331.43 is: 1,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.07 : 2,995.09 = 1,331.43 : x
  2. Step 2: Convert to fraction form
    2,171.07/2,995.09 = 1,331.43/x
  3. Step 3: Cross multiply
    2,171.07x = 2,995.09 × 1,331.43
  4. Step 4: Simplify right side
    2,171.07x = 3,987,752.68
  5. Step 5: Solve for x
    x = 3,987,752.68/2,171.07
  6. Step 6: Final answer
    x = 1,836.77

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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.