Home / 4,219.12-5,821.47-2,449.78

Finding the Fourth Proportional to 4,219.12, 5,821.47 and 2,449.78

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Solution

The fourth proportional to 4,219.12, 5,821.47 and 2,449.78 is: 3,380.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,219.12 : 5,821.47 = 2,449.78 : x
  2. Step 2: Convert to fraction form
    4,219.12/5,821.47 = 2,449.78/x
  3. Step 3: Cross multiply
    4,219.12x = 5,821.47 × 2,449.78
  4. Step 4: Simplify right side
    4,219.12x = 14,261,320.78
  5. Step 5: Solve for x
    x = 14,261,320.78/4,219.12
  6. Step 6: Final answer
    x = 3,380.16

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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.