Home / 3,799.15-5,242.36-2,120.65

Finding the Fourth Proportional to 3,799.15, 5,242.36 and 2,120.65

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Solution

The fourth proportional to 3,799.15, 5,242.36 and 2,120.65 is: 2,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,799.15 : 5,242.36 = 2,120.65 : x
  2. Step 2: Convert to fraction form
    3,799.15/5,242.36 = 2,120.65/x
  3. Step 3: Cross multiply
    3,799.15x = 5,242.36 × 2,120.65
  4. Step 4: Simplify right side
    3,799.15x = 11,117,173.92
  5. Step 5: Solve for x
    x = 11,117,173.92/3,799.15
  6. Step 6: Final answer
    x = 2,926.23

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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.