Home / 2,881.96-3,971.58-1,996.12

Finding the Fourth Proportional to 2,881.96, 3,971.58 and 1,996.12

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Solution

The fourth proportional to 2,881.96, 3,971.58 and 1,996.12 is: 2,750.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.96 : 3,971.58 = 1,996.12 : x
  2. Step 2: Convert to fraction form
    2,881.96/3,971.58 = 1,996.12/x
  3. Step 3: Cross multiply
    2,881.96x = 3,971.58 × 1,996.12
  4. Step 4: Simplify right side
    2,881.96x = 7,927,750.27
  5. Step 5: Solve for x
    x = 7,927,750.27/2,881.96
  6. Step 6: Final answer
    x = 2,750.82

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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.