Home / 3,185.12-4,387.21-2,287.54

Finding the Fourth Proportional to 3,185.12, 4,387.21 and 2,287.54

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Solution

The fourth proportional to 3,185.12, 4,387.21 and 2,287.54 is: 3,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.12 : 4,387.21 = 2,287.54 : x
  2. Step 2: Convert to fraction form
    3,185.12/4,387.21 = 2,287.54/x
  3. Step 3: Cross multiply
    3,185.12x = 4,387.21 × 2,287.54
  4. Step 4: Simplify right side
    3,185.12x = 10,035,931.00
  5. Step 5: Solve for x
    x = 10,035,931.00/3,185.12
  6. Step 6: Final answer
    x = 3,150.88

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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.