Home / 2,119.92-2,924.78-1,374.81

Finding the Fourth Proportional to 2,119.92, 2,924.78 and 1,374.81

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Solution

The fourth proportional to 2,119.92, 2,924.78 and 1,374.81 is: 1,896.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.92 : 2,924.78 = 1,374.81 : x
  2. Step 2: Convert to fraction form
    2,119.92/2,924.78 = 1,374.81/x
  3. Step 3: Cross multiply
    2,119.92x = 2,924.78 × 1,374.81
  4. Step 4: Simplify right side
    2,119.92x = 4,021,009.92
  5. Step 5: Solve for x
    x = 4,021,009.92/2,119.92
  6. Step 6: Final answer
    x = 1,896.77

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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.