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Finding the Fourth Proportional to 7,738.60, 11,600.70 and 5,398.60

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Solution

The fourth proportional to 7,738.60, 11,600.70 and 5,398.60 is: 8,092.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,738.60 : 11,600.70 = 5,398.60 : x
  2. Step 2: Convert to fraction form
    7,738.60/11,600.70 = 5,398.60/x
  3. Step 3: Cross multiply
    7,738.60x = 11,600.70 × 5,398.60
  4. Step 4: Simplify right side
    7,738.60x = 62,627,539.02
  5. Step 5: Solve for x
    x = 62,627,539.02/7,738.60
  6. Step 6: Final answer
    x = 8,092.88

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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.