Home / 4,188.01-5,780.20-3,131.08

Finding the Fourth Proportional to 4,188.01, 5,780.20 and 3,131.08

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Solution

The fourth proportional to 4,188.01, 5,780.20 and 3,131.08 is: 4,321.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.01 : 5,780.20 = 3,131.08 : x
  2. Step 2: Convert to fraction form
    4,188.01/5,780.20 = 3,131.08/x
  3. Step 3: Cross multiply
    4,188.01x = 5,780.20 × 3,131.08
  4. Step 4: Simplify right side
    4,188.01x = 18,098,268.62
  5. Step 5: Solve for x
    x = 18,098,268.62/4,188.01
  6. Step 6: Final answer
    x = 4,321.45

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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.