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Finding the Fourth Proportional to 6,891.05, 9,509.72 and 3,747.24

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Solution

The fourth proportional to 6,891.05, 9,509.72 and 3,747.24 is: 5,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.05 : 9,509.72 = 3,747.24 : x
  2. Step 2: Convert to fraction form
    6,891.05/9,509.72 = 3,747.24/x
  3. Step 3: Cross multiply
    6,891.05x = 9,509.72 × 3,747.24
  4. Step 4: Simplify right side
    6,891.05x = 35,635,184.44
  5. Step 5: Solve for x
    x = 35,635,184.44/6,891.05
  6. Step 6: Final answer
    x = 5,171.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.