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Finding the Third Proportional to 2,988.25 and 4,386.38

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Solution

The third proportional to 2,988.25 and 4,386.38 is: 6,438.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.25 : 4,386.38 = 4,386.38 : x
  2. Step 2: Convert to fraction form
    2,988.25/4,386.38 = 4,386.38/x
  3. Step 3: Cross multiply
    2,988.25x = 4,386.38 × 4,386.38
  4. Step 4: Simplify right side
    2,988.25x = 19,240,285.64
  5. Step 5: Solve for x
    x = 19,240,285.64/2,988.25
  6. Step 6: Final answer
    x = 6,438.65

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.