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Finding the Third Proportional to 5,298.38 and 7,785.19

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Solution

The third proportional to 5,298.38 and 7,785.19 is: 11,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,298.38 : 7,785.19 = 7,785.19 : x
  2. Step 2: Convert to fraction form
    5,298.38/7,785.19 = 7,785.19/x
  3. Step 3: Cross multiply
    5,298.38x = 7,785.19 × 7,785.19
  4. Step 4: Simplify right side
    5,298.38x = 60,609,144.41
  5. Step 5: Solve for x
    x = 60,609,144.41/5,298.38
  6. Step 6: Final answer
    x = 11,439.19

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.