Home / 3,893.78-5,373.40-2,125.37

Finding the Fourth Proportional to 3,893.78, 5,373.40 and 2,125.37

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Solution

The fourth proportional to 3,893.78, 5,373.40 and 2,125.37 is: 2,933.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.78 : 5,373.40 = 2,125.37 : x
  2. Step 2: Convert to fraction form
    3,893.78/5,373.40 = 2,125.37/x
  3. Step 3: Cross multiply
    3,893.78x = 5,373.40 × 2,125.37
  4. Step 4: Simplify right side
    3,893.78x = 11,420,463.16
  5. Step 5: Solve for x
    x = 11,420,463.16/3,893.78
  6. Step 6: Final answer
    x = 2,933.00

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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.