Home / 3,778.48-5,214.05-2,099.78

Finding the Fourth Proportional to 3,778.48, 5,214.05 and 2,099.78

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Solution

The fourth proportional to 3,778.48, 5,214.05 and 2,099.78 is: 2,897.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.48 : 5,214.05 = 2,099.78 : x
  2. Step 2: Convert to fraction form
    3,778.48/5,214.05 = 2,099.78/x
  3. Step 3: Cross multiply
    3,778.48x = 5,214.05 × 2,099.78
  4. Step 4: Simplify right side
    3,778.48x = 10,948,360.58
  5. Step 5: Solve for x
    x = 10,948,360.58/3,778.48
  6. Step 6: Final answer
    x = 2,897.56

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1.5x scale

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.