Home / 3,818.60-5,727.10-1,872.20

Finding the Fourth Proportional to 3,818.60, 5,727.10 and 1,872.20

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Solution

The fourth proportional to 3,818.60, 5,727.10 and 1,872.20 is: 2,807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.60 : 5,727.10 = 1,872.20 : x
  2. Step 2: Convert to fraction form
    3,818.60/5,727.10 = 1,872.20/x
  3. Step 3: Cross multiply
    3,818.60x = 5,727.10 × 1,872.20
  4. Step 4: Simplify right side
    3,818.60x = 10,722,276.62
  5. Step 5: Solve for x
    x = 10,722,276.62/3,818.60
  6. Step 6: Final answer
    x = 2,807.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.