Home / 5,155.58-7,114.62-2,797.70

Finding the Fourth Proportional to 5,155.58, 7,114.62 and 2,797.70

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Solution

The fourth proportional to 5,155.58, 7,114.62 and 2,797.70 is: 3,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.58 : 7,114.62 = 2,797.70 : x
  2. Step 2: Convert to fraction form
    5,155.58/7,114.62 = 2,797.70/x
  3. Step 3: Cross multiply
    5,155.58x = 7,114.62 × 2,797.70
  4. Step 4: Simplify right side
    5,155.58x = 19,904,572.37
  5. Step 5: Solve for x
    x = 19,904,572.37/5,155.58
  6. Step 6: Final answer
    x = 3,860.78

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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.