Home / 2,816.60-4,240.97-2,643.80

Finding the Fourth Proportional to 2,816.60, 4,240.97 and 2,643.80

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Solution

The fourth proportional to 2,816.60, 4,240.97 and 2,643.80 is: 3,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.60 : 4,240.97 = 2,643.80 : x
  2. Step 2: Convert to fraction form
    2,816.60/4,240.97 = 2,643.80/x
  3. Step 3: Cross multiply
    2,816.60x = 4,240.97 × 2,643.80
  4. Step 4: Simplify right side
    2,816.60x = 11,212,276.49
  5. Step 5: Solve for x
    x = 11,212,276.49/2,816.60
  6. Step 6: Final answer
    x = 3,980.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.