Home / 2,841.86-3,921.76-1,992.36

Finding the Fourth Proportional to 2,841.86, 3,921.76 and 1,992.36

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Solution

The fourth proportional to 2,841.86, 3,921.76 and 1,992.36 is: 2,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.86 : 3,921.76 = 1,992.36 : x
  2. Step 2: Convert to fraction form
    2,841.86/3,921.76 = 1,992.36/x
  3. Step 3: Cross multiply
    2,841.86x = 3,921.76 × 1,992.36
  4. Step 4: Simplify right side
    2,841.86x = 7,813,557.75
  5. Step 5: Solve for x
    x = 7,813,557.75/2,841.86
  6. Step 6: Final answer
    x = 2,749.45

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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.