Home / 2,455.75-3,388.94-1,408.42

Finding the Fourth Proportional to 2,455.75, 3,388.94 and 1,408.42

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Solution

The fourth proportional to 2,455.75, 3,388.94 and 1,408.42 is: 1,943.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.75 : 3,388.94 = 1,408.42 : x
  2. Step 2: Convert to fraction form
    2,455.75/3,388.94 = 1,408.42/x
  3. Step 3: Cross multiply
    2,455.75x = 3,388.94 × 1,408.42
  4. Step 4: Simplify right side
    2,455.75x = 4,773,050.87
  5. Step 5: Solve for x
    x = 4,773,050.87/2,455.75
  6. Step 6: Final answer
    x = 1,943.62

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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.