Home / 3,818.12-5,725.20-1,968.80

Finding the Fourth Proportional to 3,818.12, 5,725.20 and 1,968.80

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Solution

The fourth proportional to 3,818.12, 5,725.20 and 1,968.80 is: 2,952.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.12 : 5,725.20 = 1,968.80 : x
  2. Step 2: Convert to fraction form
    3,818.12/5,725.20 = 1,968.80/x
  3. Step 3: Cross multiply
    3,818.12x = 5,725.20 × 1,968.80
  4. Step 4: Simplify right side
    3,818.12x = 11,271,773.76
  5. Step 5: Solve for x
    x = 11,271,773.76/3,818.12
  6. Step 6: Final answer
    x = 2,952.18

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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.