Home / 7,147.33-9,863.40-3,960.73

Finding the Fourth Proportional to 7,147.33, 9,863.40 and 3,960.73

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Solution

The fourth proportional to 7,147.33, 9,863.40 and 3,960.73 is: 5,465.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.33 : 9,863.40 = 3,960.73 : x
  2. Step 2: Convert to fraction form
    7,147.33/9,863.40 = 3,960.73/x
  3. Step 3: Cross multiply
    7,147.33x = 9,863.40 × 3,960.73
  4. Step 4: Simplify right side
    7,147.33x = 39,066,264.28
  5. Step 5: Solve for x
    x = 39,066,264.28/7,147.33
  6. Step 6: Final answer
    x = 5,465.85

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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.