Home / 3,191.74-4,405.46-2,072.61

Finding the Fourth Proportional to 3,191.74, 4,405.46 and 2,072.61

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Solution

The fourth proportional to 3,191.74, 4,405.46 and 2,072.61 is: 2,860.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.74 : 4,405.46 = 2,072.61 : x
  2. Step 2: Convert to fraction form
    3,191.74/4,405.46 = 2,072.61/x
  3. Step 3: Cross multiply
    3,191.74x = 4,405.46 × 2,072.61
  4. Step 4: Simplify right side
    3,191.74x = 9,130,800.45
  5. Step 5: Solve for x
    x = 9,130,800.45/3,191.74
  6. Step 6: Final answer
    x = 2,860.76

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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.