Home / 3,820.29-5,272.19-2,141.70

Finding the Fourth Proportional to 3,820.29, 5,272.19 and 2,141.70

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Solution

The fourth proportional to 3,820.29, 5,272.19 and 2,141.70 is: 2,955.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.29 : 5,272.19 = 2,141.70 : x
  2. Step 2: Convert to fraction form
    3,820.29/5,272.19 = 2,141.70/x
  3. Step 3: Cross multiply
    3,820.29x = 5,272.19 × 2,141.70
  4. Step 4: Simplify right side
    3,820.29x = 11,291,449.32
  5. Step 5: Solve for x
    x = 11,291,449.32/3,820.29
  6. Step 6: Final answer
    x = 2,955.65

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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.