Home / 3,931.41-5,425.49-2,163.15

Finding the Fourth Proportional to 3,931.41, 5,425.49 and 2,163.15

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Solution

The fourth proportional to 3,931.41, 5,425.49 and 2,163.15 is: 2,985.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.41 : 5,425.49 = 2,163.15 : x
  2. Step 2: Convert to fraction form
    3,931.41/5,425.49 = 2,163.15/x
  3. Step 3: Cross multiply
    3,931.41x = 5,425.49 × 2,163.15
  4. Step 4: Simplify right side
    3,931.41x = 11,736,148.69
  5. Step 5: Solve for x
    x = 11,736,148.69/3,931.41
  6. Step 6: Final answer
    x = 2,985.23

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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.