Home / 5,391.36-7,431.12-3,709.92

Finding the Fourth Proportional to 5,391.36, 7,431.12 and 3,709.92

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Solution

The fourth proportional to 5,391.36, 7,431.12 and 3,709.92 is: 5,113.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.36 : 7,431.12 = 3,709.92 : x
  2. Step 2: Convert to fraction form
    5,391.36/7,431.12 = 3,709.92/x
  3. Step 3: Cross multiply
    5,391.36x = 7,431.12 × 3,709.92
  4. Step 4: Simplify right side
    5,391.36x = 27,568,860.71
  5. Step 5: Solve for x
    x = 27,568,860.71/5,391.36
  6. Step 6: Final answer
    x = 5,113.53

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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.