Home / 3,933.76-5,428.59-2,165.37

Finding the Fourth Proportional to 3,933.76, 5,428.59 and 2,165.37

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Solution

The fourth proportional to 3,933.76, 5,428.59 and 2,165.37 is: 2,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.76 : 5,428.59 = 2,165.37 : x
  2. Step 2: Convert to fraction form
    3,933.76/5,428.59 = 2,165.37/x
  3. Step 3: Cross multiply
    3,933.76x = 5,428.59 × 2,165.37
  4. Step 4: Simplify right side
    3,933.76x = 11,754,878.79
  5. Step 5: Solve for x
    x = 11,754,878.79/3,933.76
  6. Step 6: Final answer
    x = 2,988.20

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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.