Home / 3,860.24-5,790.30-938.57

Finding the Fourth Proportional to 3,860.24, 5,790.30 and 938.57

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Solution

The fourth proportional to 3,860.24, 5,790.30 and 938.57 is: 1,407.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.24 : 5,790.30 = 938.57 : x
  2. Step 2: Convert to fraction form
    3,860.24/5,790.30 = 938.57/x
  3. Step 3: Cross multiply
    3,860.24x = 5,790.30 × 938.57
  4. Step 4: Simplify right side
    3,860.24x = 5,434,572.92
  5. Step 5: Solve for x
    x = 5,434,572.92/3,860.24
  6. Step 6: Final answer
    x = 1,407.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.