Home / 3,469.70-4,788.50-1,977.31

Finding the Fourth Proportional to 3,469.70, 4,788.50 and 1,977.31

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Solution

The fourth proportional to 3,469.70, 4,788.50 and 1,977.31 is: 2,728.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.70 : 4,788.50 = 1,977.31 : x
  2. Step 2: Convert to fraction form
    3,469.70/4,788.50 = 1,977.31/x
  3. Step 3: Cross multiply
    3,469.70x = 4,788.50 × 1,977.31
  4. Step 4: Simplify right side
    3,469.70x = 9,468,315.11
  5. Step 5: Solve for x
    x = 9,468,315.11/3,469.70
  6. Step 6: Final answer
    x = 2,728.86

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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.