Home / 7,115.03-10,671.33-1,919.69

Finding the Fourth Proportional to 7,115.03, 10,671.33 and 1,919.69

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Solution

The fourth proportional to 7,115.03, 10,671.33 and 1,919.69 is: 2,879.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.03 : 10,671.33 = 1,919.69 : x
  2. Step 2: Convert to fraction form
    7,115.03/10,671.33 = 1,919.69/x
  3. Step 3: Cross multiply
    7,115.03x = 10,671.33 × 1,919.69
  4. Step 4: Simplify right side
    7,115.03x = 20,485,645.49
  5. Step 5: Solve for x
    x = 20,485,645.49/7,115.03
  6. Step 6: Final answer
    x = 2,879.21

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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.