Home / 5,143.91-7,098.84-2,905.88

Finding the Fourth Proportional to 5,143.91, 7,098.84 and 2,905.88

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Solution

The fourth proportional to 5,143.91, 7,098.84 and 2,905.88 is: 4,010.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.91 : 7,098.84 = 2,905.88 : x
  2. Step 2: Convert to fraction form
    5,143.91/7,098.84 = 2,905.88/x
  3. Step 3: Cross multiply
    5,143.91x = 7,098.84 × 2,905.88
  4. Step 4: Simplify right side
    5,143.91x = 20,628,341.69
  5. Step 5: Solve for x
    x = 20,628,341.69/5,143.91
  6. Step 6: Final answer
    x = 4,010.25

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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.