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Finding the Fourth Proportional to 5,157.71, 7,736.60 and 2,195.74

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Solution

The fourth proportional to 5,157.71, 7,736.60 and 2,195.74 is: 3,293.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.71 : 7,736.60 = 2,195.74 : x
  2. Step 2: Convert to fraction form
    5,157.71/7,736.60 = 2,195.74/x
  3. Step 3: Cross multiply
    5,157.71x = 7,736.60 × 2,195.74
  4. Step 4: Simplify right side
    5,157.71x = 16,987,531.76
  5. Step 5: Solve for x
    x = 16,987,531.76/5,157.71
  6. Step 6: Final answer
    x = 3,293.62

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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.