Home / 3,820.61-5,272.11-2,141.75

Finding the Fourth Proportional to 3,820.61, 5,272.11 and 2,141.75

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Solution

The fourth proportional to 3,820.61, 5,272.11 and 2,141.75 is: 2,955.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.61 : 5,272.11 = 2,141.75 : x
  2. Step 2: Convert to fraction form
    3,820.61/5,272.11 = 2,141.75/x
  3. Step 3: Cross multiply
    3,820.61x = 5,272.11 × 2,141.75
  4. Step 4: Simplify right side
    3,820.61x = 11,291,541.59
  5. Step 5: Solve for x
    x = 11,291,541.59/3,820.61
  6. Step 6: Final answer
    x = 2,955.43

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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.