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Finding the Fourth Proportional to 7,666.56, 11,484.72 and 7,126.56

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Solution

The fourth proportional to 7,666.56, 11,484.72 and 7,126.56 is: 10,675.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.56 : 11,484.72 = 7,126.56 : x
  2. Step 2: Convert to fraction form
    7,666.56/11,484.72 = 7,126.56/x
  3. Step 3: Cross multiply
    7,666.56x = 11,484.72 × 7,126.56
  4. Step 4: Simplify right side
    7,666.56x = 81,846,546.16
  5. Step 5: Solve for x
    x = 81,846,546.16/7,666.56
  6. Step 6: Final answer
    x = 10,675.78

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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.