Home / 2,645.38-3,956.15-2,020.87

Finding the Fourth Proportional to 2,645.38, 3,956.15 and 2,020.87

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Solution

The fourth proportional to 2,645.38, 3,956.15 and 2,020.87 is: 3,022.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.38 : 3,956.15 = 2,020.87 : x
  2. Step 2: Convert to fraction form
    2,645.38/3,956.15 = 2,020.87/x
  3. Step 3: Cross multiply
    2,645.38x = 3,956.15 × 2,020.87
  4. Step 4: Simplify right side
    2,645.38x = 7,994,860.01
  5. Step 5: Solve for x
    x = 7,994,860.01/2,645.38
  6. Step 6: Final answer
    x = 3,022.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.