Home / 2,438.40-3,360.64-1,906.56

Finding the Fourth Proportional to 2,438.40, 3,360.64 and 1,906.56

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Solution

The fourth proportional to 2,438.40, 3,360.64 and 1,906.56 is: 2,627.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.40 : 3,360.64 = 1,906.56 : x
  2. Step 2: Convert to fraction form
    2,438.40/3,360.64 = 1,906.56/x
  3. Step 3: Cross multiply
    2,438.40x = 3,360.64 × 1,906.56
  4. Step 4: Simplify right side
    2,438.40x = 6,407,261.80
  5. Step 5: Solve for x
    x = 6,407,261.80/2,438.40
  6. Step 6: Final answer
    x = 2,627.65

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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.