Home / 4,985.85-7,469.19-2,787.91

Finding the Fourth Proportional to 4,985.85, 7,469.19 and 2,787.91

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Solution

The fourth proportional to 4,985.85, 7,469.19 and 2,787.91 is: 4,176.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.85 : 7,469.19 = 2,787.91 : x
  2. Step 2: Convert to fraction form
    4,985.85/7,469.19 = 2,787.91/x
  3. Step 3: Cross multiply
    4,985.85x = 7,469.19 × 2,787.91
  4. Step 4: Simplify right side
    4,985.85x = 20,823,429.49
  5. Step 5: Solve for x
    x = 20,823,429.49/4,985.85
  6. Step 6: Final answer
    x = 4,176.51

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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.