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Finding the Fourth Proportional to 7,753.60, 11,617.60 and 6,601.60

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Solution

The fourth proportional to 7,753.60, 11,617.60 and 6,601.60 is: 9,891.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,753.60 : 11,617.60 = 6,601.60 : x
  2. Step 2: Convert to fraction form
    7,753.60/11,617.60 = 6,601.60/x
  3. Step 3: Cross multiply
    7,753.60x = 11,617.60 × 6,601.60
  4. Step 4: Simplify right side
    7,753.60x = 76,694,748.16
  5. Step 5: Solve for x
    x = 76,694,748.16/7,753.60
  6. Step 6: Final answer
    x = 9,891.50

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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.