Home / 2,719.70-3,747.81-1,931.54

Finding the Fourth Proportional to 2,719.70, 3,747.81 and 1,931.54

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Solution

The fourth proportional to 2,719.70, 3,747.81 and 1,931.54 is: 2,661.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.70 : 3,747.81 = 1,931.54 : x
  2. Step 2: Convert to fraction form
    2,719.70/3,747.81 = 1,931.54/x
  3. Step 3: Cross multiply
    2,719.70x = 3,747.81 × 1,931.54
  4. Step 4: Simplify right side
    2,719.70x = 7,239,044.93
  5. Step 5: Solve for x
    x = 7,239,044.93/2,719.70
  6. Step 6: Final answer
    x = 2,661.71

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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.