Home / 5,739-7,919.48-3,220.58

Finding the Fourth Proportional to 5,739, 7,919.48 and 3,220.58

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Solution

The fourth proportional to 5,739, 7,919.48 and 3,220.58 is: 4,444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,739 : 7,919.48 = 3,220.58 : x
  2. Step 2: Convert to fraction form
    5,739/7,919.48 = 3,220.58/x
  3. Step 3: Cross multiply
    5,739x = 7,919.48 × 3,220.58
  4. Step 4: Simplify right side
    5,739x = 25,505,318.90
  5. Step 5: Solve for x
    x = 25,505,318.90/5,739
  6. Step 6: Final answer
    x = 4,444.21

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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.