Home / 3,438.80-5,160.30-1,249.05

Finding the Fourth Proportional to 3,438.80, 5,160.30 and 1,249.05

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Solution

The fourth proportional to 3,438.80, 5,160.30 and 1,249.05 is: 1,874.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.80 : 5,160.30 = 1,249.05 : x
  2. Step 2: Convert to fraction form
    3,438.80/5,160.30 = 1,249.05/x
  3. Step 3: Cross multiply
    3,438.80x = 5,160.30 × 1,249.05
  4. Step 4: Simplify right side
    3,438.80x = 6,445,472.72
  5. Step 5: Solve for x
    x = 6,445,472.72/3,438.80
  6. Step 6: Final answer
    x = 1,874.34

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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.