Home / 4,919.76-7,380.66-2,321.28

Finding the Fourth Proportional to 4,919.76, 7,380.66 and 2,321.28

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Solution

The fourth proportional to 4,919.76, 7,380.66 and 2,321.28 is: 3,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.76 : 7,380.66 = 2,321.28 : x
  2. Step 2: Convert to fraction form
    4,919.76/7,380.66 = 2,321.28/x
  3. Step 3: Cross multiply
    4,919.76x = 7,380.66 × 2,321.28
  4. Step 4: Simplify right side
    4,919.76x = 17,132,578.44
  5. Step 5: Solve for x
    x = 17,132,578.44/4,919.76
  6. Step 6: Final answer
    x = 3,482.40

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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.