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Finding the Third Proportional to 1,365 and 3,490.50

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Solution

The third proportional to 1,365 and 3,490.50 is: 8,925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365 : 3,490.50 = 3,490.50 : x
  2. Step 2: Convert to fraction form
    1,365/3,490.50 = 3,490.50/x
  3. Step 3: Cross multiply
    1,365x = 3,490.50 × 3,490.50
  4. Step 4: Simplify right side
    1,365x = 12,183,590.25
  5. Step 5: Solve for x
    x = 12,183,590.25/1,365
  6. Step 6: Final answer
    x = 8,925.71

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.