Home / 3,438.31-5,157.39-1,098.29

Finding the Fourth Proportional to 3,438.31, 5,157.39 and 1,098.29

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Solution

The fourth proportional to 3,438.31, 5,157.39 and 1,098.29 is: 1,647.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.31 : 5,157.39 = 1,098.29 : x
  2. Step 2: Convert to fraction form
    3,438.31/5,157.39 = 1,098.29/x
  3. Step 3: Cross multiply
    3,438.31x = 5,157.39 × 1,098.29
  4. Step 4: Simplify right side
    3,438.31x = 5,664,309.86
  5. Step 5: Solve for x
    x = 5,664,309.86/3,438.31
  6. Step 6: Final answer
    x = 1,647.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.