Home / 2,455.21-3,388.31-1,447.48

Finding the Fourth Proportional to 2,455.21, 3,388.31 and 1,447.48

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Solution

The fourth proportional to 2,455.21, 3,388.31 and 1,447.48 is: 1,997.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.21 : 3,388.31 = 1,447.48 : x
  2. Step 2: Convert to fraction form
    2,455.21/3,388.31 = 1,447.48/x
  3. Step 3: Cross multiply
    2,455.21x = 3,388.31 × 1,447.48
  4. Step 4: Simplify right side
    2,455.21x = 4,904,510.96
  5. Step 5: Solve for x
    x = 4,904,510.96/2,455.21
  6. Step 6: Final answer
    x = 1,997.59

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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.