Home / 2,190.48-3,278.43-2,107.86

Finding the Fourth Proportional to 2,190.48, 3,278.43 and 2,107.86

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Solution

The fourth proportional to 2,190.48, 3,278.43 and 2,107.86 is: 3,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.48 : 3,278.43 = 2,107.86 : x
  2. Step 2: Convert to fraction form
    2,190.48/3,278.43 = 2,107.86/x
  3. Step 3: Cross multiply
    2,190.48x = 3,278.43 × 2,107.86
  4. Step 4: Simplify right side
    2,190.48x = 6,910,471.46
  5. Step 5: Solve for x
    x = 6,910,471.46/2,190.48
  6. Step 6: Final answer
    x = 3,154.77

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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.