Home / 7,107.20-9,808.16-3,963.39

Finding the Fourth Proportional to 7,107.20, 9,808.16 and 3,963.39

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Solution

The fourth proportional to 7,107.20, 9,808.16 and 3,963.39 is: 5,469.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.20 : 9,808.16 = 3,963.39 : x
  2. Step 2: Convert to fraction form
    7,107.20/9,808.16 = 3,963.39/x
  3. Step 3: Cross multiply
    7,107.20x = 9,808.16 × 3,963.39
  4. Step 4: Simplify right side
    7,107.20x = 38,873,563.26
  5. Step 5: Solve for x
    x = 38,873,563.26/7,107.20
  6. Step 6: Final answer
    x = 5,469.60

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1.5x scale

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.