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Finding the Fourth Proportional to 3,699.17, 5,108.97 and 2,869.89

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Solution

The fourth proportional to 3,699.17, 5,108.97 and 2,869.89 is: 3,963.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.17 : 5,108.97 = 2,869.89 : x
  2. Step 2: Convert to fraction form
    3,699.17/5,108.97 = 2,869.89/x
  3. Step 3: Cross multiply
    3,699.17x = 5,108.97 × 2,869.89
  4. Step 4: Simplify right side
    3,699.17x = 14,662,181.91
  5. Step 5: Solve for x
    x = 14,662,181.91/3,699.17
  6. Step 6: Final answer
    x = 3,963.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.