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Finding the Fourth Proportional to 6,919.01, 10,368.78 and 5,188.85

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Solution

The fourth proportional to 6,919.01, 10,368.78 and 5,188.85 is: 7,775.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.01 : 10,368.78 = 5,188.85 : x
  2. Step 2: Convert to fraction form
    6,919.01/10,368.78 = 5,188.85/x
  3. Step 3: Cross multiply
    6,919.01x = 10,368.78 × 5,188.85
  4. Step 4: Simplify right side
    6,919.01x = 53,801,992.26
  5. Step 5: Solve for x
    x = 53,801,992.26/6,919.01
  6. Step 6: Final answer
    x = 7,775.97

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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.