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Finding the Third Proportional to 4,190 and 6,239.50

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Solution

The third proportional to 4,190 and 6,239.50 is: 9,291.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190 : 6,239.50 = 6,239.50 : x
  2. Step 2: Convert to fraction form
    4,190/6,239.50 = 6,239.50/x
  3. Step 3: Cross multiply
    4,190x = 6,239.50 × 6,239.50
  4. Step 4: Simplify right side
    4,190x = 38,931,360.25
  5. Step 5: Solve for x
    x = 38,931,360.25/4,190
  6. Step 6: Final answer
    x = 9,291.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.