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Finding the Third Proportional to 3,315.75 and 4,881.75

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Solution

The third proportional to 3,315.75 and 4,881.75 is: 7,187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.75 : 4,881.75 = 4,881.75 : x
  2. Step 2: Convert to fraction form
    3,315.75/4,881.75 = 4,881.75/x
  3. Step 3: Cross multiply
    3,315.75x = 4,881.75 × 4,881.75
  4. Step 4: Simplify right side
    3,315.75x = 23,831,483.06
  5. Step 5: Solve for x
    x = 23,831,483.06/3,315.75
  6. Step 6: Final answer
    x = 7,187.36

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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.