Home / 2,838.99-3,917.21-1,720

Finding the Fourth Proportional to 2,838.99, 3,917.21 and 1,720

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Solution

The fourth proportional to 2,838.99, 3,917.21 and 1,720 is: 2,373.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.99 : 3,917.21 = 1,720 : x
  2. Step 2: Convert to fraction form
    2,838.99/3,917.21 = 1,720/x
  3. Step 3: Cross multiply
    2,838.99x = 3,917.21 × 1,720
  4. Step 4: Simplify right side
    2,838.99x = 6,737,601.20
  5. Step 5: Solve for x
    x = 6,737,601.20/2,838.99
  6. Step 6: Final answer
    x = 2,373.24

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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.