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Finding the Fourth Proportional to 6,911.74, 10,371.91 and 2,807.74

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Solution

The fourth proportional to 6,911.74, 10,371.91 and 2,807.74 is: 4,213.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.74 : 10,371.91 = 2,807.74 : x
  2. Step 2: Convert to fraction form
    6,911.74/10,371.91 = 2,807.74/x
  3. Step 3: Cross multiply
    6,911.74x = 10,371.91 × 2,807.74
  4. Step 4: Simplify right side
    6,911.74x = 29,121,626.58
  5. Step 5: Solve for x
    x = 29,121,626.58/6,911.74
  6. Step 6: Final answer
    x = 4,213.36

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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.