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Finding the Third Proportional to 5,643 and 9,628.50

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Solution

The third proportional to 5,643 and 9,628.50 is: 16,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643 : 9,628.50 = 9,628.50 : x
  2. Step 2: Convert to fraction form
    5,643/9,628.50 = 9,628.50/x
  3. Step 3: Cross multiply
    5,643x = 9,628.50 × 9,628.50
  4. Step 4: Simplify right side
    5,643x = 92,708,012.25
  5. Step 5: Solve for x
    x = 92,708,012.25/5,643
  6. Step 6: Final answer
    x = 16,428.85

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.