Home / 3,931.46-5,425.48-2,163.23

Finding the Fourth Proportional to 3,931.46, 5,425.48 and 2,163.23

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Solution

The fourth proportional to 3,931.46, 5,425.48 and 2,163.23 is: 2,985.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.46 : 5,425.48 = 2,163.23 : x
  2. Step 2: Convert to fraction form
    3,931.46/5,425.48 = 2,163.23/x
  3. Step 3: Cross multiply
    3,931.46x = 5,425.48 × 2,163.23
  4. Step 4: Simplify right side
    3,931.46x = 11,736,561.10
  5. Step 5: Solve for x
    x = 11,736,561.10/3,931.46
  6. Step 6: Final answer
    x = 2,985.29

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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.