Home / 3,220.91-4,434.98-2,820.28

Finding the Fourth Proportional to 3,220.91, 4,434.98 and 2,820.28

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Solution

The fourth proportional to 3,220.91, 4,434.98 and 2,820.28 is: 3,883.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.91 : 4,434.98 = 2,820.28 : x
  2. Step 2: Convert to fraction form
    3,220.91/4,434.98 = 2,820.28/x
  3. Step 3: Cross multiply
    3,220.91x = 4,434.98 × 2,820.28
  4. Step 4: Simplify right side
    3,220.91x = 12,507,849.12
  5. Step 5: Solve for x
    x = 12,507,849.12/3,220.91
  6. Step 6: Final answer
    x = 3,883.33

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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.