Home / 2,171.03-2,995.89-1,286.51

Finding the Fourth Proportional to 2,171.03, 2,995.89 and 1,286.51

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Solution

The fourth proportional to 2,171.03, 2,995.89 and 1,286.51 is: 1,775.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.03 : 2,995.89 = 1,286.51 : x
  2. Step 2: Convert to fraction form
    2,171.03/2,995.89 = 1,286.51/x
  3. Step 3: Cross multiply
    2,171.03x = 2,995.89 × 1,286.51
  4. Step 4: Simplify right side
    2,171.03x = 3,854,242.44
  5. Step 5: Solve for x
    x = 3,854,242.44/2,171.03
  6. Step 6: Final answer
    x = 1,775.31

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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.