Home / 3,131.45-4,322.13-2,069.41

Finding the Fourth Proportional to 3,131.45, 4,322.13 and 2,069.41

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Solution

The fourth proportional to 3,131.45, 4,322.13 and 2,069.41 is: 2,856.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.45 : 4,322.13 = 2,069.41 : x
  2. Step 2: Convert to fraction form
    3,131.45/4,322.13 = 2,069.41/x
  3. Step 3: Cross multiply
    3,131.45x = 4,322.13 × 2,069.41
  4. Step 4: Simplify right side
    3,131.45x = 8,944,259.04
  5. Step 5: Solve for x
    x = 8,944,259.04/3,131.45
  6. Step 6: Final answer
    x = 2,856.27

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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.