Home / 3,828.10-5,742.15-2,661.70

Finding the Fourth Proportional to 3,828.10, 5,742.15 and 2,661.70

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Solution

The fourth proportional to 3,828.10, 5,742.15 and 2,661.70 is: 3,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.10 : 5,742.15 = 2,661.70 : x
  2. Step 2: Convert to fraction form
    3,828.10/5,742.15 = 2,661.70/x
  3. Step 3: Cross multiply
    3,828.10x = 5,742.15 × 2,661.70
  4. Step 4: Simplify right side
    3,828.10x = 15,283,880.66
  5. Step 5: Solve for x
    x = 15,283,880.66/3,828.10
  6. Step 6: Final answer
    x = 3,992.55

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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.