Home / 4,144.32-5,720.10-2,821.20

Finding the Fourth Proportional to 4,144.32, 5,720.10 and 2,821.20

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Solution

The fourth proportional to 4,144.32, 5,720.10 and 2,821.20 is: 3,893.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,144.32 : 5,720.10 = 2,821.20 : x
  2. Step 2: Convert to fraction form
    4,144.32/5,720.10 = 2,821.20/x
  3. Step 3: Cross multiply
    4,144.32x = 5,720.10 × 2,821.20
  4. Step 4: Simplify right side
    4,144.32x = 16,137,546.12
  5. Step 5: Solve for x
    x = 16,137,546.12/4,144.32
  6. Step 6: Final answer
    x = 3,893.89

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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.