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Finding the Fourth Proportional to 3,701.70, 5,108.09 and 2,108.12

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Solution

The fourth proportional to 3,701.70, 5,108.09 and 2,108.12 is: 2,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,701.70 : 5,108.09 = 2,108.12 : x
  2. Step 2: Convert to fraction form
    3,701.70/5,108.09 = 2,108.12/x
  3. Step 3: Cross multiply
    3,701.70x = 5,108.09 × 2,108.12
  4. Step 4: Simplify right side
    3,701.70x = 10,768,430.61
  5. Step 5: Solve for x
    x = 10,768,430.61/3,701.70
  6. Step 6: Final answer
    x = 2,909.05

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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.