Home / 2,805.41-3,872.86-2,174.51

Finding the Fourth Proportional to 2,805.41, 3,872.86 and 2,174.51

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Solution

The fourth proportional to 2,805.41, 3,872.86 and 2,174.51 is: 3,001.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.41 : 3,872.86 = 2,174.51 : x
  2. Step 2: Convert to fraction form
    2,805.41/3,872.86 = 2,174.51/x
  3. Step 3: Cross multiply
    2,805.41x = 3,872.86 × 2,174.51
  4. Step 4: Simplify right side
    2,805.41x = 8,421,577.04
  5. Step 5: Solve for x
    x = 8,421,577.04/2,805.41
  6. Step 6: Final answer
    x = 3,001.90

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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.