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Finding the Fourth Proportional to 3,553.88, 4,913.22 and 2,668.15

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Solution

The fourth proportional to 3,553.88, 4,913.22 and 2,668.15 is: 3,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553.88 : 4,913.22 = 2,668.15 : x
  2. Step 2: Convert to fraction form
    3,553.88/4,913.22 = 2,668.15/x
  3. Step 3: Cross multiply
    3,553.88x = 4,913.22 × 2,668.15
  4. Step 4: Simplify right side
    3,553.88x = 13,109,207.94
  5. Step 5: Solve for x
    x = 13,109,207.94/3,553.88
  6. Step 6: Final answer
    x = 3,688.70

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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.