Home / 2,022.21-2,791.30-1,312.79

Finding the Fourth Proportional to 2,022.21, 2,791.30 and 1,312.79

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Solution

The fourth proportional to 2,022.21, 2,791.30 and 1,312.79 is: 1,812.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.21 : 2,791.30 = 1,312.79 : x
  2. Step 2: Convert to fraction form
    2,022.21/2,791.30 = 1,312.79/x
  3. Step 3: Cross multiply
    2,022.21x = 2,791.30 × 1,312.79
  4. Step 4: Simplify right side
    2,022.21x = 3,664,390.73
  5. Step 5: Solve for x
    x = 3,664,390.73/2,022.21
  6. Step 6: Final answer
    x = 1,812.07

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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.