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Finding the Third Proportional to 4,078 and 5,369

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Solution

The third proportional to 4,078 and 5,369 is: 7,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078 : 5,369 = 5,369 : x
  2. Step 2: Convert to fraction form
    4,078/5,369 = 5,369/x
  3. Step 3: Cross multiply
    4,078x = 5,369 × 5,369
  4. Step 4: Simplify right side
    4,078x = 28,826,161
  5. Step 5: Solve for x
    x = 28,826,161/4,078
  6. Step 6: Final answer
    x = 7,068.70

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.