Home / 5,161.91-7,721.17-4,787.99

Finding the Fourth Proportional to 5,161.91, 7,721.17 and 4,787.99

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Solution

The fourth proportional to 5,161.91, 7,721.17 and 4,787.99 is: 7,161.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.91 : 7,721.17 = 4,787.99 : x
  2. Step 2: Convert to fraction form
    5,161.91/7,721.17 = 4,787.99/x
  3. Step 3: Cross multiply
    5,161.91x = 7,721.17 × 4,787.99
  4. Step 4: Simplify right side
    5,161.91x = 36,968,884.75
  5. Step 5: Solve for x
    x = 36,968,884.75/5,161.91
  6. Step 6: Final answer
    x = 7,161.86

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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.