Home / 2,820.25-3,891.90-2,223.37

Finding the Fourth Proportional to 2,820.25, 3,891.90 and 2,223.37

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Solution

The fourth proportional to 2,820.25, 3,891.90 and 2,223.37 is: 3,068.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.25 : 3,891.90 = 2,223.37 : x
  2. Step 2: Convert to fraction form
    2,820.25/3,891.90 = 2,223.37/x
  3. Step 3: Cross multiply
    2,820.25x = 3,891.90 × 2,223.37
  4. Step 4: Simplify right side
    2,820.25x = 8,653,133.70
  5. Step 5: Solve for x
    x = 8,653,133.70/2,820.25
  6. Step 6: Final answer
    x = 3,068.22

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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.