Home / 3,931.83-5,425.83-2,163.42

Finding the Fourth Proportional to 3,931.83, 5,425.83 and 2,163.42

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Solution

The fourth proportional to 3,931.83, 5,425.83 and 2,163.42 is: 2,985.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.83 : 5,425.83 = 2,163.42 : x
  2. Step 2: Convert to fraction form
    3,931.83/5,425.83 = 2,163.42/x
  3. Step 3: Cross multiply
    3,931.83x = 5,425.83 × 2,163.42
  4. Step 4: Simplify right side
    3,931.83x = 11,738,349.14
  5. Step 5: Solve for x
    x = 11,738,349.14/3,931.83
  6. Step 6: Final answer
    x = 2,985.47

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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.