Home / 2,840.20-3,920.21-2,544.96

Finding the Fourth Proportional to 2,840.20, 3,920.21 and 2,544.96

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Solution

The fourth proportional to 2,840.20, 3,920.21 and 2,544.96 is: 3,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.20 : 3,920.21 = 2,544.96 : x
  2. Step 2: Convert to fraction form
    2,840.20/3,920.21 = 2,544.96/x
  3. Step 3: Cross multiply
    2,840.20x = 3,920.21 × 2,544.96
  4. Step 4: Simplify right side
    2,840.20x = 9,976,777.64
  5. Step 5: Solve for x
    x = 9,976,777.64/2,840.20
  6. Step 6: Final answer
    x = 3,512.70

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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.