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Finding the Fourth Proportional to 5,489.70, 7,577.22 and 3,392.64

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Solution

The fourth proportional to 5,489.70, 7,577.22 and 3,392.64 is: 4,682.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.70 : 7,577.22 = 3,392.64 : x
  2. Step 2: Convert to fraction form
    5,489.70/7,577.22 = 3,392.64/x
  3. Step 3: Cross multiply
    5,489.70x = 7,577.22 × 3,392.64
  4. Step 4: Simplify right side
    5,489.70x = 25,706,779.66
  5. Step 5: Solve for x
    x = 25,706,779.66/5,489.70
  6. Step 6: Final answer
    x = 4,682.73

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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.