Home / 3,931.50-5,425.47-2,163.27

Finding the Fourth Proportional to 3,931.50, 5,425.47 and 2,163.27

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Solution

The fourth proportional to 3,931.50, 5,425.47 and 2,163.27 is: 2,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.50 : 5,425.47 = 2,163.27 : x
  2. Step 2: Convert to fraction form
    3,931.50/5,425.47 = 2,163.27/x
  3. Step 3: Cross multiply
    3,931.50x = 5,425.47 × 2,163.27
  4. Step 4: Simplify right side
    3,931.50x = 11,736,756.49
  5. Step 5: Solve for x
    x = 11,736,756.49/3,931.50
  6. Step 6: Final answer
    x = 2,985.31

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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.