Home / 3,500.80-5,249.40-1,308.40

Finding the Fourth Proportional to 3,500.80, 5,249.40 and 1,308.40

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Solution

The fourth proportional to 3,500.80, 5,249.40 and 1,308.40 is: 1,961.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.80 : 5,249.40 = 1,308.40 : x
  2. Step 2: Convert to fraction form
    3,500.80/5,249.40 = 1,308.40/x
  3. Step 3: Cross multiply
    3,500.80x = 5,249.40 × 1,308.40
  4. Step 4: Simplify right side
    3,500.80x = 6,868,314.96
  5. Step 5: Solve for x
    x = 6,868,314.96/3,500.80
  6. Step 6: Final answer
    x = 1,961.93

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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.