Home / 3,889.22-5,370.91-2,770.20

Finding the Fourth Proportional to 3,889.22, 5,370.91 and 2,770.20

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Solution

The fourth proportional to 3,889.22, 5,370.91 and 2,770.20 is: 3,825.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.22 : 5,370.91 = 2,770.20 : x
  2. Step 2: Convert to fraction form
    3,889.22/5,370.91 = 2,770.20/x
  3. Step 3: Cross multiply
    3,889.22x = 5,370.91 × 2,770.20
  4. Step 4: Simplify right side
    3,889.22x = 14,878,487.96
  5. Step 5: Solve for x
    x = 14,878,487.96/3,889.22
  6. Step 6: Final answer
    x = 3,825.58

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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.