Home / 5,739.42-7,919.85-3,221.55

Finding the Fourth Proportional to 5,739.42, 7,919.85 and 3,221.55

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Solution

The fourth proportional to 5,739.42, 7,919.85 and 3,221.55 is: 4,445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,739.42 : 7,919.85 = 3,221.55 : x
  2. Step 2: Convert to fraction form
    5,739.42/7,919.85 = 3,221.55/x
  3. Step 3: Cross multiply
    5,739.42x = 7,919.85 × 3,221.55
  4. Step 4: Simplify right side
    5,739.42x = 25,514,192.77
  5. Step 5: Solve for x
    x = 25,514,192.77/5,739.42
  6. Step 6: Final answer
    x = 4,445.43

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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.