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Finding the Fourth Proportional to 7,676.60, 10,580.04 and 6,611.60

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Solution

The fourth proportional to 7,676.60, 10,580.04 and 6,611.60 is: 9,112.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,676.60 : 10,580.04 = 6,611.60 : x
  2. Step 2: Convert to fraction form
    7,676.60/10,580.04 = 6,611.60/x
  3. Step 3: Cross multiply
    7,676.60x = 10,580.04 × 6,611.60
  4. Step 4: Simplify right side
    7,676.60x = 69,950,992.46
  5. Step 5: Solve for x
    x = 69,950,992.46/7,676.60
  6. Step 6: Final answer
    x = 9,112.24

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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.