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Finding the Third Proportional to 7,710.19 and 10,917.28

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Solution

The third proportional to 7,710.19 and 10,917.28 is: 15,458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,710.19 : 10,917.28 = 10,917.28 : x
  2. Step 2: Convert to fraction form
    7,710.19/10,917.28 = 10,917.28/x
  3. Step 3: Cross multiply
    7,710.19x = 10,917.28 × 10,917.28
  4. Step 4: Simplify right side
    7,710.19x = 119,187,029.89
  5. Step 5: Solve for x
    x = 119,187,029.89/7,710.19
  6. Step 6: Final answer
    x = 15,458.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.