Home / 4,919.22-7,378.97-1,587.78

Finding the Fourth Proportional to 4,919.22, 7,378.97 and 1,587.78

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Solution

The fourth proportional to 4,919.22, 7,378.97 and 1,587.78 is: 2,381.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.22 : 7,378.97 = 1,587.78 : x
  2. Step 2: Convert to fraction form
    4,919.22/7,378.97 = 1,587.78/x
  3. Step 3: Cross multiply
    4,919.22x = 7,378.97 × 1,587.78
  4. Step 4: Simplify right side
    4,919.22x = 11,716,173.05
  5. Step 5: Solve for x
    x = 11,716,173.05/4,919.22
  6. Step 6: Final answer
    x = 2,381.71

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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.