Home / 2,455.85-3,389.36-1,447.78

Finding the Fourth Proportional to 2,455.85, 3,389.36 and 1,447.78

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Solution

The fourth proportional to 2,455.85, 3,389.36 and 1,447.78 is: 1,998.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.85 : 3,389.36 = 1,447.78 : x
  2. Step 2: Convert to fraction form
    2,455.85/3,389.36 = 1,447.78/x
  3. Step 3: Cross multiply
    2,455.85x = 3,389.36 × 1,447.78
  4. Step 4: Simplify right side
    2,455.85x = 4,907,047.62
  5. Step 5: Solve for x
    x = 4,907,047.62/2,455.85
  6. Step 6: Final answer
    x = 1,998.11

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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.