Home / 3,820.70-5,272.26-2,141.76

Finding the Fourth Proportional to 3,820.70, 5,272.26 and 2,141.76

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Solution

The fourth proportional to 3,820.70, 5,272.26 and 2,141.76 is: 2,955.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.70 : 5,272.26 = 2,141.76 : x
  2. Step 2: Convert to fraction form
    3,820.70/5,272.26 = 2,141.76/x
  3. Step 3: Cross multiply
    3,820.70x = 5,272.26 × 2,141.76
  4. Step 4: Simplify right side
    3,820.70x = 11,291,915.58
  5. Step 5: Solve for x
    x = 11,291,915.58/3,820.70
  6. Step 6: Final answer
    x = 2,955.46

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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.