Home / 3,890.68-5,365.60-2,898.44

Finding the Fourth Proportional to 3,890.68, 5,365.60 and 2,898.44

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Solution

The fourth proportional to 3,890.68, 5,365.60 and 2,898.44 is: 3,997.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.68 : 5,365.60 = 2,898.44 : x
  2. Step 2: Convert to fraction form
    3,890.68/5,365.60 = 2,898.44/x
  3. Step 3: Cross multiply
    3,890.68x = 5,365.60 × 2,898.44
  4. Step 4: Simplify right side
    3,890.68x = 15,551,869.66
  5. Step 5: Solve for x
    x = 15,551,869.66/3,890.68
  6. Step 6: Final answer
    x = 3,997.21

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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.