Home / 8,869.70-13,309.35-3,940.10

Finding the Fourth Proportional to 8,869.70, 13,309.35 and 3,940.10

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Solution

The fourth proportional to 8,869.70, 13,309.35 and 3,940.10 is: 5,912.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.70 : 13,309.35 = 3,940.10 : x
  2. Step 2: Convert to fraction form
    8,869.70/13,309.35 = 3,940.10/x
  3. Step 3: Cross multiply
    8,869.70x = 13,309.35 × 3,940.10
  4. Step 4: Simplify right side
    8,869.70x = 52,440,169.94
  5. Step 5: Solve for x
    x = 52,440,169.94/8,869.70
  6. Step 6: Final answer
    x = 5,912.28

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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.