Home / 7,150.40-9,867.21-3,963.49

Finding the Fourth Proportional to 7,150.40, 9,867.21 and 3,963.49

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Solution

The fourth proportional to 7,150.40, 9,867.21 and 3,963.49 is: 5,469.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,150.40 : 9,867.21 = 3,963.49 : x
  2. Step 2: Convert to fraction form
    7,150.40/9,867.21 = 3,963.49/x
  3. Step 3: Cross multiply
    7,150.40x = 9,867.21 × 3,963.49
  4. Step 4: Simplify right side
    7,150.40x = 39,108,588.16
  5. Step 5: Solve for x
    x = 39,108,588.16/7,150.40
  6. Step 6: Final answer
    x = 5,469.43

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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.