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Finding the Third Proportional to 3,312 and 5,316

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Solution

The third proportional to 3,312 and 5,316 is: 8,532.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312 : 5,316 = 5,316 : x
  2. Step 2: Convert to fraction form
    3,312/5,316 = 5,316/x
  3. Step 3: Cross multiply
    3,312x = 5,316 × 5,316
  4. Step 4: Simplify right side
    3,312x = 28,259,856
  5. Step 5: Solve for x
    x = 28,259,856/3,312
  6. Step 6: Final answer
    x = 8,532.57

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.