Home / 2,768.92-4,155.21-1,308.17

Finding the Fourth Proportional to 2,768.92, 4,155.21 and 1,308.17

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Solution

The fourth proportional to 2,768.92, 4,155.21 and 1,308.17 is: 1,963.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.92 : 4,155.21 = 1,308.17 : x
  2. Step 2: Convert to fraction form
    2,768.92/4,155.21 = 1,308.17/x
  3. Step 3: Cross multiply
    2,768.92x = 4,155.21 × 1,308.17
  4. Step 4: Simplify right side
    2,768.92x = 5,435,731.45
  5. Step 5: Solve for x
    x = 5,435,731.45/2,768.92
  6. Step 6: Final answer
    x = 1,963.13

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1.5x scale

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.