Home / 3,122.88-4,680-2,658.24

Finding the Fourth Proportional to 3,122.88, 4,680 and 2,658.24

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Solution

The fourth proportional to 3,122.88, 4,680 and 2,658.24 is: 3,983.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.88 : 4,680 = 2,658.24 : x
  2. Step 2: Convert to fraction form
    3,122.88/4,680 = 2,658.24/x
  3. Step 3: Cross multiply
    3,122.88x = 4,680 × 2,658.24
  4. Step 4: Simplify right side
    3,122.88x = 12,440,563.20
  5. Step 5: Solve for x
    x = 12,440,563.20/3,122.88
  6. Step 6: Final answer
    x = 3,983.68

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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.