Home / 2,981.92-4,115.03-1,722.96

Finding the Fourth Proportional to 2,981.92, 4,115.03 and 1,722.96

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Solution

The fourth proportional to 2,981.92, 4,115.03 and 1,722.96 is: 2,377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.92 : 4,115.03 = 1,722.96 : x
  2. Step 2: Convert to fraction form
    2,981.92/4,115.03 = 1,722.96/x
  3. Step 3: Cross multiply
    2,981.92x = 4,115.03 × 1,722.96
  4. Step 4: Simplify right side
    2,981.92x = 7,090,032.09
  5. Step 5: Solve for x
    x = 7,090,032.09/2,981.92
  6. Step 6: Final answer
    x = 2,377.67

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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.