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Finding the Fourth Proportional to 3,699.21, 5,100.05 and 2,849.43

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Solution

The fourth proportional to 3,699.21, 5,100.05 and 2,849.43 is: 3,928.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.21 : 5,100.05 = 2,849.43 : x
  2. Step 2: Convert to fraction form
    3,699.21/5,100.05 = 2,849.43/x
  3. Step 3: Cross multiply
    3,699.21x = 5,100.05 × 2,849.43
  4. Step 4: Simplify right side
    3,699.21x = 14,532,221.22
  5. Step 5: Solve for x
    x = 14,532,221.22/3,699.21
  6. Step 6: Final answer
    x = 3,928.47

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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.