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Finding the Third Proportional to 3,129.19 and 4,374.84

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Solution

The third proportional to 3,129.19 and 4,374.84 is: 6,116.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.19 : 4,374.84 = 4,374.84 : x
  2. Step 2: Convert to fraction form
    3,129.19/4,374.84 = 4,374.84/x
  3. Step 3: Cross multiply
    3,129.19x = 4,374.84 × 4,374.84
  4. Step 4: Simplify right side
    3,129.19x = 19,139,257.84
  5. Step 5: Solve for x
    x = 19,139,257.84/3,129.19
  6. Step 6: Final answer
    x = 6,116.37

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.