Home / 4,257.55-6,388.42-1,919.17

Finding the Fourth Proportional to 4,257.55, 6,388.42 and 1,919.17

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Solution

The fourth proportional to 4,257.55, 6,388.42 and 1,919.17 is: 2,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.55 : 6,388.42 = 1,919.17 : x
  2. Step 2: Convert to fraction form
    4,257.55/6,388.42 = 1,919.17/x
  3. Step 3: Cross multiply
    4,257.55x = 6,388.42 × 1,919.17
  4. Step 4: Simplify right side
    4,257.55x = 12,260,464.01
  5. Step 5: Solve for x
    x = 12,260,464.01/4,257.55
  6. Step 6: Final answer
    x = 2,879.70

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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.