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Finding the Fourth Proportional to 8,239.68, 11,370.78 and 4,513.68

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Solution

The fourth proportional to 8,239.68, 11,370.78 and 4,513.68 is: 6,228.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.68 : 11,370.78 = 4,513.68 : x
  2. Step 2: Convert to fraction form
    8,239.68/11,370.78 = 4,513.68/x
  3. Step 3: Cross multiply
    8,239.68x = 11,370.78 × 4,513.68
  4. Step 4: Simplify right side
    8,239.68x = 51,324,062.27
  5. Step 5: Solve for x
    x = 51,324,062.27/8,239.68
  6. Step 6: Final answer
    x = 6,228.89

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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.