Home / 3,965.36-5,469.66-3,125.79

Finding the Fourth Proportional to 3,965.36, 5,469.66 and 3,125.79

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Solution

The fourth proportional to 3,965.36, 5,469.66 and 3,125.79 is: 4,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.36 : 5,469.66 = 3,125.79 : x
  2. Step 2: Convert to fraction form
    3,965.36/5,469.66 = 3,125.79/x
  3. Step 3: Cross multiply
    3,965.36x = 5,469.66 × 3,125.79
  4. Step 4: Simplify right side
    3,965.36x = 17,097,008.53
  5. Step 5: Solve for x
    x = 17,097,008.53/3,965.36
  6. Step 6: Final answer
    x = 4,311.60

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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.