Home / 3,906.02-5,390.32-2,137.52

Finding the Fourth Proportional to 3,906.02, 5,390.32 and 2,137.52

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Solution

The fourth proportional to 3,906.02, 5,390.32 and 2,137.52 is: 2,949.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.02 : 5,390.32 = 2,137.52 : x
  2. Step 2: Convert to fraction form
    3,906.02/5,390.32 = 2,137.52/x
  3. Step 3: Cross multiply
    3,906.02x = 5,390.32 × 2,137.52
  4. Step 4: Simplify right side
    3,906.02x = 11,521,916.81
  5. Step 5: Solve for x
    x = 11,521,916.81/3,906.02
  6. Step 6: Final answer
    x = 2,949.78

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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.