Home / 3,189.15-4,777.50-2,090.19

Finding the Fourth Proportional to 3,189.15, 4,777.50 and 2,090.19

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Solution

The fourth proportional to 3,189.15, 4,777.50 and 2,090.19 is: 3,131.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.15 : 4,777.50 = 2,090.19 : x
  2. Step 2: Convert to fraction form
    3,189.15/4,777.50 = 2,090.19/x
  3. Step 3: Cross multiply
    3,189.15x = 4,777.50 × 2,090.19
  4. Step 4: Simplify right side
    3,189.15x = 9,985,882.73
  5. Step 5: Solve for x
    x = 9,985,882.73/3,189.15
  6. Step 6: Final answer
    x = 3,131.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.