Home / 3,869.20-5,341.02-2,611

Finding the Fourth Proportional to 3,869.20, 5,341.02 and 2,611

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Solution

The fourth proportional to 3,869.20, 5,341.02 and 2,611 is: 3,604.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.20 : 5,341.02 = 2,611 : x
  2. Step 2: Convert to fraction form
    3,869.20/5,341.02 = 2,611/x
  3. Step 3: Cross multiply
    3,869.20x = 5,341.02 × 2,611
  4. Step 4: Simplify right side
    3,869.20x = 13,945,403.22
  5. Step 5: Solve for x
    x = 13,945,403.22/3,869.20
  6. Step 6: Final answer
    x = 3,604.21

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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.