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Finding the Fourth Proportional to 7,759.60, 11,579.36 and 6,928.94

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Solution

The fourth proportional to 7,759.60, 11,579.36 and 6,928.94 is: 10,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,759.60 : 11,579.36 = 6,928.94 : x
  2. Step 2: Convert to fraction form
    7,759.60/11,579.36 = 6,928.94/x
  3. Step 3: Cross multiply
    7,759.60x = 11,579.36 × 6,928.94
  4. Step 4: Simplify right side
    7,759.60x = 80,232,684.98
  5. Step 5: Solve for x
    x = 80,232,684.98/7,759.60
  6. Step 6: Final answer
    x = 10,339.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.