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Finding the Fourth Proportional to 7,663.91, 10,581.03 and 5,015.79

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Solution

The fourth proportional to 7,663.91, 10,581.03 and 5,015.79 is: 6,924.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,663.91 : 10,581.03 = 5,015.79 : x
  2. Step 2: Convert to fraction form
    7,663.91/10,581.03 = 5,015.79/x
  3. Step 3: Cross multiply
    7,663.91x = 10,581.03 × 5,015.79
  4. Step 4: Simplify right side
    7,663.91x = 53,072,224.46
  5. Step 5: Solve for x
    x = 53,072,224.46/7,663.91
  6. Step 6: Final answer
    x = 6,924.96

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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.