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Finding the Third Proportional to 4,087 and 5,434.50

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Solution

The third proportional to 4,087 and 5,434.50 is: 7,226.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087 : 5,434.50 = 5,434.50 : x
  2. Step 2: Convert to fraction form
    4,087/5,434.50 = 5,434.50/x
  3. Step 3: Cross multiply
    4,087x = 5,434.50 × 5,434.50
  4. Step 4: Simplify right side
    4,087x = 29,533,790.25
  5. Step 5: Solve for x
    x = 29,533,790.25/4,087
  6. Step 6: Final answer
    x = 7,226.28

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.