Home / 3,931.33-5,425.56-2,163.19

Finding the Fourth Proportional to 3,931.33, 5,425.56 and 2,163.19

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Solution

The fourth proportional to 3,931.33, 5,425.56 and 2,163.19 is: 2,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.33 : 5,425.56 = 2,163.19 : x
  2. Step 2: Convert to fraction form
    3,931.33/5,425.56 = 2,163.19/x
  3. Step 3: Cross multiply
    3,931.33x = 5,425.56 × 2,163.19
  4. Step 4: Simplify right side
    3,931.33x = 11,736,479.19
  5. Step 5: Solve for x
    x = 11,736,479.19/3,931.33
  6. Step 6: Final answer
    x = 2,985.37

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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.