Home / 4,759.20-7,138.80-1,249.20

Finding the Fourth Proportional to 4,759.20, 7,138.80 and 1,249.20

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Solution

The fourth proportional to 4,759.20, 7,138.80 and 1,249.20 is: 1,873.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759.20 : 7,138.80 = 1,249.20 : x
  2. Step 2: Convert to fraction form
    4,759.20/7,138.80 = 1,249.20/x
  3. Step 3: Cross multiply
    4,759.20x = 7,138.80 × 1,249.20
  4. Step 4: Simplify right side
    4,759.20x = 8,917,788.96
  5. Step 5: Solve for x
    x = 8,917,788.96/4,759.20
  6. Step 6: Final answer
    x = 1,873.80

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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.