Home / 3,039.80-4,196.43-1,921.86

Finding the Fourth Proportional to 3,039.80, 4,196.43 and 1,921.86

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Solution

The fourth proportional to 3,039.80, 4,196.43 and 1,921.86 is: 2,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.80 : 4,196.43 = 1,921.86 : x
  2. Step 2: Convert to fraction form
    3,039.80/4,196.43 = 1,921.86/x
  3. Step 3: Cross multiply
    3,039.80x = 4,196.43 × 1,921.86
  4. Step 4: Simplify right side
    3,039.80x = 8,064,950.96
  5. Step 5: Solve for x
    x = 8,064,950.96/3,039.80
  6. Step 6: Final answer
    x = 2,653.12

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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.