Home / 2,778.20-3,829.46-1,881.66

Finding the Fourth Proportional to 2,778.20, 3,829.46 and 1,881.66

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Solution

The fourth proportional to 2,778.20, 3,829.46 and 1,881.66 is: 2,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.20 : 3,829.46 = 1,881.66 : x
  2. Step 2: Convert to fraction form
    2,778.20/3,829.46 = 1,881.66/x
  3. Step 3: Cross multiply
    2,778.20x = 3,829.46 × 1,881.66
  4. Step 4: Simplify right side
    2,778.20x = 7,205,741.70
  5. Step 5: Solve for x
    x = 7,205,741.70/2,778.20
  6. Step 6: Final answer
    x = 2,593.68

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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.