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Finding the Third Proportional to 5,643 and 8,607.75

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Solution

The third proportional to 5,643 and 8,607.75 is: 13,130.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643 : 8,607.75 = 8,607.75 : x
  2. Step 2: Convert to fraction form
    5,643/8,607.75 = 8,607.75/x
  3. Step 3: Cross multiply
    5,643x = 8,607.75 × 8,607.75
  4. Step 4: Simplify right side
    5,643x = 74,093,360.06
  5. Step 5: Solve for x
    x = 74,093,360.06/5,643
  6. Step 6: Final answer
    x = 13,130.14

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.