Home / 3,781.08-5,205.97-3,430.76

Finding the Fourth Proportional to 3,781.08, 5,205.97 and 3,430.76

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Solution

The fourth proportional to 3,781.08, 5,205.97 and 3,430.76 is: 4,723.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.08 : 5,205.97 = 3,430.76 : x
  2. Step 2: Convert to fraction form
    3,781.08/5,205.97 = 3,430.76/x
  3. Step 3: Cross multiply
    3,781.08x = 5,205.97 × 3,430.76
  4. Step 4: Simplify right side
    3,781.08x = 17,860,438.08
  5. Step 5: Solve for x
    x = 17,860,438.08/3,781.08
  6. Step 6: Final answer
    x = 4,723.63

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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.