Home / 2,822.12-3,890.20-2,223.52

Finding the Fourth Proportional to 2,822.12, 3,890.20 and 2,223.52

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Solution

The fourth proportional to 2,822.12, 3,890.20 and 2,223.52 is: 3,065.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.12 : 3,890.20 = 2,223.52 : x
  2. Step 2: Convert to fraction form
    2,822.12/3,890.20 = 2,223.52/x
  3. Step 3: Cross multiply
    2,822.12x = 3,890.20 × 2,223.52
  4. Step 4: Simplify right side
    2,822.12x = 8,649,937.50
  5. Step 5: Solve for x
    x = 8,649,937.50/2,822.12
  6. Step 6: Final answer
    x = 3,065.05

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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.