Home / 3,933.72-5,428.48-2,165.31

Finding the Fourth Proportional to 3,933.72, 5,428.48 and 2,165.31

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Solution

The fourth proportional to 3,933.72, 5,428.48 and 2,165.31 is: 2,988.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.72 : 5,428.48 = 2,165.31 : x
  2. Step 2: Convert to fraction form
    3,933.72/5,428.48 = 2,165.31/x
  3. Step 3: Cross multiply
    3,933.72x = 5,428.48 × 2,165.31
  4. Step 4: Simplify right side
    3,933.72x = 11,754,342.03
  5. Step 5: Solve for x
    x = 11,754,342.03/3,933.72
  6. Step 6: Final answer
    x = 2,988.10

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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.