Home / 3,820.60-5,272.44-2,142.08

Finding the Fourth Proportional to 3,820.60, 5,272.44 and 2,142.08

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Solution

The fourth proportional to 3,820.60, 5,272.44 and 2,142.08 is: 2,956.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.60 : 5,272.44 = 2,142.08 : x
  2. Step 2: Convert to fraction form
    3,820.60/5,272.44 = 2,142.08/x
  3. Step 3: Cross multiply
    3,820.60x = 5,272.44 × 2,142.08
  4. Step 4: Simplify right side
    3,820.60x = 11,293,988.28
  5. Step 5: Solve for x
    x = 11,293,988.28/3,820.60
  6. Step 6: Final answer
    x = 2,956.08

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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.