Home / 3,864.87-5,333.40-2,163.38

Finding the Fourth Proportional to 3,864.87, 5,333.40 and 2,163.38

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Solution

The fourth proportional to 3,864.87, 5,333.40 and 2,163.38 is: 2,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,864.87 : 5,333.40 = 2,163.38 : x
  2. Step 2: Convert to fraction form
    3,864.87/5,333.40 = 2,163.38/x
  3. Step 3: Cross multiply
    3,864.87x = 5,333.40 × 2,163.38
  4. Step 4: Simplify right side
    3,864.87x = 11,538,144.23
  5. Step 5: Solve for x
    x = 11,538,144.23/3,864.87
  6. Step 6: Final answer
    x = 2,985.39

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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.