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Finding the Third Proportional to 7,312 and 15,777

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Solution

The third proportional to 7,312 and 15,777 is: 34,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,312 : 15,777 = 15,777 : x
  2. Step 2: Convert to fraction form
    7,312/15,777 = 15,777/x
  3. Step 3: Cross multiply
    7,312x = 15,777 × 15,777
  4. Step 4: Simplify right side
    7,312x = 248,913,729
  5. Step 5: Solve for x
    x = 248,913,729/7,312
  6. Step 6: Final answer
    x = 34,041.81

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.