Home / 6,919.53-10,379.24-1,989.15

Finding the Fourth Proportional to 6,919.53, 10,379.24 and 1,989.15

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Solution

The fourth proportional to 6,919.53, 10,379.24 and 1,989.15 is: 2,983.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.53 : 10,379.24 = 1,989.15 : x
  2. Step 2: Convert to fraction form
    6,919.53/10,379.24 = 1,989.15/x
  3. Step 3: Cross multiply
    6,919.53x = 10,379.24 × 1,989.15
  4. Step 4: Simplify right side
    6,919.53x = 20,645,855.30
  5. Step 5: Solve for x
    x = 20,645,855.30/6,919.53
  6. Step 6: Final answer
    x = 2,983.71

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Double scale
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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.