Home / 3,931.83-5,425.47-2,163.33

Finding the Fourth Proportional to 3,931.83, 5,425.47 and 2,163.33

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Solution

The fourth proportional to 3,931.83, 5,425.47 and 2,163.33 is: 2,985.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.83 : 5,425.47 = 2,163.33 : x
  2. Step 2: Convert to fraction form
    3,931.83/5,425.47 = 2,163.33/x
  3. Step 3: Cross multiply
    3,931.83x = 5,425.47 × 2,163.33
  4. Step 4: Simplify right side
    3,931.83x = 11,737,082.02
  5. Step 5: Solve for x
    x = 11,737,082.02/3,931.83
  6. Step 6: Final answer
    x = 2,985.14

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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.