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Finding the Third Proportional to 3,315.25 and 4,981.25

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Solution

The third proportional to 3,315.25 and 4,981.25 is: 7,484.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.25 : 4,981.25 = 4,981.25 : x
  2. Step 2: Convert to fraction form
    3,315.25/4,981.25 = 4,981.25/x
  3. Step 3: Cross multiply
    3,315.25x = 4,981.25 × 4,981.25
  4. Step 4: Simplify right side
    3,315.25x = 24,812,851.56
  5. Step 5: Solve for x
    x = 24,812,851.56/3,315.25
  6. Step 6: Final answer
    x = 7,484.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.