Home / 2,107.38-3,161.94-875.70

Finding the Fourth Proportional to 2,107.38, 3,161.94 and 875.70

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Solution

The fourth proportional to 2,107.38, 3,161.94 and 875.70 is: 1,313.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.38 : 3,161.94 = 875.70 : x
  2. Step 2: Convert to fraction form
    2,107.38/3,161.94 = 875.70/x
  3. Step 3: Cross multiply
    2,107.38x = 3,161.94 × 875.70
  4. Step 4: Simplify right side
    2,107.38x = 2,768,910.86
  5. Step 5: Solve for x
    x = 2,768,910.86/2,107.38
  6. Step 6: Final answer
    x = 1,313.91

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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.