Home / 5,143.91-7,098.57-2,905.61

Finding the Fourth Proportional to 5,143.91, 7,098.57 and 2,905.61

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Solution

The fourth proportional to 5,143.91, 7,098.57 and 2,905.61 is: 4,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.91 : 7,098.57 = 2,905.61 : x
  2. Step 2: Convert to fraction form
    5,143.91/7,098.57 = 2,905.61/x
  3. Step 3: Cross multiply
    5,143.91x = 7,098.57 × 2,905.61
  4. Step 4: Simplify right side
    5,143.91x = 20,625,640.48
  5. Step 5: Solve for x
    x = 20,625,640.48/5,143.91
  6. Step 6: Final answer
    x = 4,009.72

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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.