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Finding the Fourth Proportional to 8,665.56, 11,958.36 and 4,939.56

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Solution

The fourth proportional to 8,665.56, 11,958.36 and 4,939.56 is: 6,816.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.56 : 11,958.36 = 4,939.56 : x
  2. Step 2: Convert to fraction form
    8,665.56/11,958.36 = 4,939.56/x
  3. Step 3: Cross multiply
    8,665.56x = 11,958.36 × 4,939.56
  4. Step 4: Simplify right side
    8,665.56x = 59,069,036.72
  5. Step 5: Solve for x
    x = 59,069,036.72/8,665.56
  6. Step 6: Final answer
    x = 6,816.53

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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.