Home / 3,145.36-4,338.21-2,081.23

Finding the Fourth Proportional to 3,145.36, 4,338.21 and 2,081.23

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Solution

The fourth proportional to 3,145.36, 4,338.21 and 2,081.23 is: 2,870.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.36 : 4,338.21 = 2,081.23 : x
  2. Step 2: Convert to fraction form
    3,145.36/4,338.21 = 2,081.23/x
  3. Step 3: Cross multiply
    3,145.36x = 4,338.21 × 2,081.23
  4. Step 4: Simplify right side
    3,145.36x = 9,028,812.80
  5. Step 5: Solve for x
    x = 9,028,812.80/3,145.36
  6. Step 6: Final answer
    x = 2,870.52

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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.