Home / 2,418.74-3,338.15-1,356.80

Finding the Fourth Proportional to 2,418.74, 3,338.15 and 1,356.80

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Solution

The fourth proportional to 2,418.74, 3,338.15 and 1,356.80 is: 1,872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.74 : 3,338.15 = 1,356.80 : x
  2. Step 2: Convert to fraction form
    2,418.74/3,338.15 = 1,356.80/x
  3. Step 3: Cross multiply
    2,418.74x = 3,338.15 × 1,356.80
  4. Step 4: Simplify right side
    2,418.74x = 4,529,190.96
  5. Step 5: Solve for x
    x = 4,529,190.96/2,418.74
  6. Step 6: Final answer
    x = 1,872.54

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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.