Home / 5,739.15-7,920.32-3,221.13

Finding the Fourth Proportional to 5,739.15, 7,920.32 and 3,221.13

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Solution

The fourth proportional to 5,739.15, 7,920.32 and 3,221.13 is: 4,445.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,739.15 : 7,920.32 = 3,221.13 : x
  2. Step 2: Convert to fraction form
    5,739.15/7,920.32 = 3,221.13/x
  3. Step 3: Cross multiply
    5,739.15x = 7,920.32 × 3,221.13
  4. Step 4: Simplify right side
    5,739.15x = 25,512,380.36
  5. Step 5: Solve for x
    x = 25,512,380.36/5,739.15
  6. Step 6: Final answer
    x = 4,445.32

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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.