Home / 6,620.20-9,914.10-3,153.40

Finding the Fourth Proportional to 6,620.20, 9,914.10 and 3,153.40

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Solution

The fourth proportional to 6,620.20, 9,914.10 and 3,153.40 is: 4,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.20 : 9,914.10 = 3,153.40 : x
  2. Step 2: Convert to fraction form
    6,620.20/9,914.10 = 3,153.40/x
  3. Step 3: Cross multiply
    6,620.20x = 9,914.10 × 3,153.40
  4. Step 4: Simplify right side
    6,620.20x = 31,263,122.94
  5. Step 5: Solve for x
    x = 31,263,122.94/6,620.20
  6. Step 6: Final answer
    x = 4,722.38

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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.