Home / 3,820.74-5,731.78-1,971.35

Finding the Fourth Proportional to 3,820.74, 5,731.78 and 1,971.35

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Solution

The fourth proportional to 3,820.74, 5,731.78 and 1,971.35 is: 2,957.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.74 : 5,731.78 = 1,971.35 : x
  2. Step 2: Convert to fraction form
    3,820.74/5,731.78 = 1,971.35/x
  3. Step 3: Cross multiply
    3,820.74x = 5,731.78 × 1,971.35
  4. Step 4: Simplify right side
    3,820.74x = 11,299,344.50
  5. Step 5: Solve for x
    x = 11,299,344.50/3,820.74
  6. Step 6: Final answer
    x = 2,957.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.