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Finding the Third Proportional to 762.13 and 1,639.81

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Solution

The third proportional to 762.13 and 1,639.81 is: 3,528.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.13 : 1,639.81 = 1,639.81 : x
  2. Step 2: Convert to fraction form
    762.13/1,639.81 = 1,639.81/x
  3. Step 3: Cross multiply
    762.13x = 1,639.81 × 1,639.81
  4. Step 4: Simplify right side
    762.13x = 2,688,985.04
  5. Step 5: Solve for x
    x = 2,688,985.04/762.13
  6. Step 6: Final answer
    x = 3,528.27

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.