Home / 3,132.85-4,320.94-2,190.31

Finding the Fourth Proportional to 3,132.85, 4,320.94 and 2,190.31

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Solution

The fourth proportional to 3,132.85, 4,320.94 and 2,190.31 is: 3,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.85 : 4,320.94 = 2,190.31 : x
  2. Step 2: Convert to fraction form
    3,132.85/4,320.94 = 2,190.31/x
  3. Step 3: Cross multiply
    3,132.85x = 4,320.94 × 2,190.31
  4. Step 4: Simplify right side
    3,132.85x = 9,464,198.09
  5. Step 5: Solve for x
    x = 9,464,198.09/3,132.85
  6. Step 6: Final answer
    x = 3,020.95

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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.