Home / 6,919.69-10,379.55-1,989.73

Finding the Fourth Proportional to 6,919.69, 10,379.55 and 1,989.73

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Solution

The fourth proportional to 6,919.69, 10,379.55 and 1,989.73 is: 2,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.69 : 10,379.55 = 1,989.73 : x
  2. Step 2: Convert to fraction form
    6,919.69/10,379.55 = 1,989.73/x
  3. Step 3: Cross multiply
    6,919.69x = 10,379.55 × 1,989.73
  4. Step 4: Simplify right side
    6,919.69x = 20,652,502.02
  5. Step 5: Solve for x
    x = 20,652,502.02/6,919.69
  6. Step 6: Final answer
    x = 2,984.60

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Similar ratio
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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.