Home / 3,799.28-5,242.86-2,120.60

Finding the Fourth Proportional to 3,799.28, 5,242.86 and 2,120.60

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Solution

The fourth proportional to 3,799.28, 5,242.86 and 2,120.60 is: 2,926.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,799.28 : 5,242.86 = 2,120.60 : x
  2. Step 2: Convert to fraction form
    3,799.28/5,242.86 = 2,120.60/x
  3. Step 3: Cross multiply
    3,799.28x = 5,242.86 × 2,120.60
  4. Step 4: Simplify right side
    3,799.28x = 11,118,008.92
  5. Step 5: Solve for x
    x = 11,118,008.92/3,799.28
  6. Step 6: Final answer
    x = 2,926.35

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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.