Home / 3,893.40-5,372.87-2,124.97

Finding the Fourth Proportional to 3,893.40, 5,372.87 and 2,124.97

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Solution

The fourth proportional to 3,893.40, 5,372.87 and 2,124.97 is: 2,932.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.40 : 5,372.87 = 2,124.97 : x
  2. Step 2: Convert to fraction form
    3,893.40/5,372.87 = 2,124.97/x
  3. Step 3: Cross multiply
    3,893.40x = 5,372.87 × 2,124.97
  4. Step 4: Simplify right side
    3,893.40x = 11,417,163.51
  5. Step 5: Solve for x
    x = 11,417,163.51/3,893.40
  6. Step 6: Final answer
    x = 2,932.44

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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.