Home / 3,890.52-5,369.76-2,564.36

Finding the Fourth Proportional to 3,890.52, 5,369.76 and 2,564.36

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Solution

The fourth proportional to 3,890.52, 5,369.76 and 2,564.36 is: 3,539.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.52 : 5,369.76 = 2,564.36 : x
  2. Step 2: Convert to fraction form
    3,890.52/5,369.76 = 2,564.36/x
  3. Step 3: Cross multiply
    3,890.52x = 5,369.76 × 2,564.36
  4. Step 4: Simplify right side
    3,890.52x = 13,769,997.75
  5. Step 5: Solve for x
    x = 13,769,997.75/3,890.52
  6. Step 6: Final answer
    x = 3,539.37

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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.