Home / 3,889.50-5,365.66-2,631

Finding the Fourth Proportional to 3,889.50, 5,365.66 and 2,631

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Solution

The fourth proportional to 3,889.50, 5,365.66 and 2,631 is: 3,629.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.50 : 5,365.66 = 2,631 : x
  2. Step 2: Convert to fraction form
    3,889.50/5,365.66 = 2,631/x
  3. Step 3: Cross multiply
    3,889.50x = 5,365.66 × 2,631
  4. Step 4: Simplify right side
    3,889.50x = 14,117,051.46
  5. Step 5: Solve for x
    x = 14,117,051.46/3,889.50
  6. Step 6: Final answer
    x = 3,629.53

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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.