Home / 2,983.74-4,119.45-1,921.89

Finding the Fourth Proportional to 2,983.74, 4,119.45 and 1,921.89

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Solution

The fourth proportional to 2,983.74, 4,119.45 and 1,921.89 is: 2,653.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,983.74 : 4,119.45 = 1,921.89 : x
  2. Step 2: Convert to fraction form
    2,983.74/4,119.45 = 1,921.89/x
  3. Step 3: Cross multiply
    2,983.74x = 4,119.45 × 1,921.89
  4. Step 4: Simplify right side
    2,983.74x = 7,917,129.76
  5. Step 5: Solve for x
    x = 7,917,129.76/2,983.74
  6. Step 6: Final answer
    x = 2,653.42

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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.