Home / 5,190.23-7,787.30-3,111.73

Finding the Fourth Proportional to 5,190.23, 7,787.30 and 3,111.73

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Solution

The fourth proportional to 5,190.23, 7,787.30 and 3,111.73 is: 4,668.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.23 : 7,787.30 = 3,111.73 : x
  2. Step 2: Convert to fraction form
    5,190.23/7,787.30 = 3,111.73/x
  3. Step 3: Cross multiply
    5,190.23x = 7,787.30 × 3,111.73
  4. Step 4: Simplify right side
    5,190.23x = 24,231,920.53
  5. Step 5: Solve for x
    x = 24,231,920.53/5,190.23
  6. Step 6: Final answer
    x = 4,668.76

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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.