Home / 3,868.09-5,337.99-2,099.70

Finding the Fourth Proportional to 3,868.09, 5,337.99 and 2,099.70

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Solution

The fourth proportional to 3,868.09, 5,337.99 and 2,099.70 is: 2,897.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.09 : 5,337.99 = 2,099.70 : x
  2. Step 2: Convert to fraction form
    3,868.09/5,337.99 = 2,099.70/x
  3. Step 3: Cross multiply
    3,868.09x = 5,337.99 × 2,099.70
  4. Step 4: Simplify right side
    3,868.09x = 11,208,190.95
  5. Step 5: Solve for x
    x = 11,208,190.95/3,868.09
  6. Step 6: Final answer
    x = 2,897.60

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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.