Home / 5,090.20-7,027.86-3,909.16

Finding the Fourth Proportional to 5,090.20, 7,027.86 and 3,909.16

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Solution

The fourth proportional to 5,090.20, 7,027.86 and 3,909.16 is: 5,397.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.20 : 7,027.86 = 3,909.16 : x
  2. Step 2: Convert to fraction form
    5,090.20/7,027.86 = 3,909.16/x
  3. Step 3: Cross multiply
    5,090.20x = 7,027.86 × 3,909.16
  4. Step 4: Simplify right side
    5,090.20x = 27,473,029.20
  5. Step 5: Solve for x
    x = 27,473,029.20/5,090.20
  6. Step 6: Final answer
    x = 5,397.24

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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.