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Finding the Third Proportional to 3,115.63 and 4,788.91

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Solution

The third proportional to 3,115.63 and 4,788.91 is: 7,360.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.63 : 4,788.91 = 4,788.91 : x
  2. Step 2: Convert to fraction form
    3,115.63/4,788.91 = 4,788.91/x
  3. Step 3: Cross multiply
    3,115.63x = 4,788.91 × 4,788.91
  4. Step 4: Simplify right side
    3,115.63x = 22,933,623.07
  5. Step 5: Solve for x
    x = 22,933,623.07/3,115.63
  6. Step 6: Final answer
    x = 7,360.84

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.