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Finding the Fourth Proportional to 8,704.60, 12,015.08 and 5,560.79

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Solution

The fourth proportional to 8,704.60, 12,015.08 and 5,560.79 is: 7,675.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704.60 : 12,015.08 = 5,560.79 : x
  2. Step 2: Convert to fraction form
    8,704.60/12,015.08 = 5,560.79/x
  3. Step 3: Cross multiply
    8,704.60x = 12,015.08 × 5,560.79
  4. Step 4: Simplify right side
    8,704.60x = 66,813,300.97
  5. Step 5: Solve for x
    x = 66,813,300.97/8,704.60
  6. Step 6: Final answer
    x = 7,675.63

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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.