Home / 2,747.30-3,786.87-2,156.84

Finding the Fourth Proportional to 2,747.30, 3,786.87 and 2,156.84

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Solution

The fourth proportional to 2,747.30, 3,786.87 and 2,156.84 is: 2,972.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.30 : 3,786.87 = 2,156.84 : x
  2. Step 2: Convert to fraction form
    2,747.30/3,786.87 = 2,156.84/x
  3. Step 3: Cross multiply
    2,747.30x = 3,786.87 × 2,156.84
  4. Step 4: Simplify right side
    2,747.30x = 8,167,672.69
  5. Step 5: Solve for x
    x = 8,167,672.69/2,747.30
  6. Step 6: Final answer
    x = 2,972.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.