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Finding the Third Proportional to 5,656.50 and 8,790.19

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Solution

The third proportional to 5,656.50 and 8,790.19 is: 13,659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.50 : 8,790.19 = 8,790.19 : x
  2. Step 2: Convert to fraction form
    5,656.50/8,790.19 = 8,790.19/x
  3. Step 3: Cross multiply
    5,656.50x = 8,790.19 × 8,790.19
  4. Step 4: Simplify right side
    5,656.50x = 77,267,396.29
  5. Step 5: Solve for x
    x = 77,267,396.29/5,656.50
  6. Step 6: Final answer
    x = 13,659.93

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.