Home / 1,400.92-2,107.14-1,228.12

Finding the Fourth Proportional to 1,400.92, 2,107.14 and 1,228.12

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Solution

The fourth proportional to 1,400.92, 2,107.14 and 1,228.12 is: 1,847.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.92 : 2,107.14 = 1,228.12 : x
  2. Step 2: Convert to fraction form
    1,400.92/2,107.14 = 1,228.12/x
  3. Step 3: Cross multiply
    1,400.92x = 2,107.14 × 1,228.12
  4. Step 4: Simplify right side
    1,400.92x = 2,587,820.78
  5. Step 5: Solve for x
    x = 2,587,820.78/1,400.92
  6. Step 6: Final answer
    x = 1,847.23

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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.