Home / 2,115.16-3,155.97-2,102.92

Finding the Fourth Proportional to 2,115.16, 3,155.97 and 2,102.92

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Solution

The fourth proportional to 2,115.16, 3,155.97 and 2,102.92 is: 3,137.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.16 : 3,155.97 = 2,102.92 : x
  2. Step 2: Convert to fraction form
    2,115.16/3,155.97 = 2,102.92/x
  3. Step 3: Cross multiply
    2,115.16x = 3,155.97 × 2,102.92
  4. Step 4: Simplify right side
    2,115.16x = 6,636,752.43
  5. Step 5: Solve for x
    x = 6,636,752.43/2,115.16
  6. Step 6: Final answer
    x = 3,137.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.