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Finding the Third Proportional to 4,557 and 7,139.25

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Solution

The third proportional to 4,557 and 7,139.25 is: 11,184.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,557 : 7,139.25 = 7,139.25 : x
  2. Step 2: Convert to fraction form
    4,557/7,139.25 = 7,139.25/x
  3. Step 3: Cross multiply
    4,557x = 7,139.25 × 7,139.25
  4. Step 4: Simplify right side
    4,557x = 50,968,890.56
  5. Step 5: Solve for x
    x = 50,968,890.56/4,557
  6. Step 6: Final answer
    x = 11,184.75

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.