Home / 2,178.18-3,267.54-879.84

Finding the Fourth Proportional to 2,178.18, 3,267.54 and 879.84

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Solution

The fourth proportional to 2,178.18, 3,267.54 and 879.84 is: 1,319.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.18 : 3,267.54 = 879.84 : x
  2. Step 2: Convert to fraction form
    2,178.18/3,267.54 = 879.84/x
  3. Step 3: Cross multiply
    2,178.18x = 3,267.54 × 879.84
  4. Step 4: Simplify right side
    2,178.18x = 2,874,912.39
  5. Step 5: Solve for x
    x = 2,874,912.39/2,178.18
  6. Step 6: Final answer
    x = 1,319.87

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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.