Home / 4,168.80-5,757.68-2,840.20

Finding the Fourth Proportional to 4,168.80, 5,757.68 and 2,840.20

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Solution

The fourth proportional to 4,168.80, 5,757.68 and 2,840.20 is: 3,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,168.80 : 5,757.68 = 2,840.20 : x
  2. Step 2: Convert to fraction form
    4,168.80/5,757.68 = 2,840.20/x
  3. Step 3: Cross multiply
    4,168.80x = 5,757.68 × 2,840.20
  4. Step 4: Simplify right side
    4,168.80x = 16,352,962.74
  5. Step 5: Solve for x
    x = 16,352,962.74/4,168.80
  6. Step 6: Final answer
    x = 3,922.70

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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.