Home / 5,143.88-7,099.20-2,905.86

Finding the Fourth Proportional to 5,143.88, 7,099.20 and 2,905.86

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Solution

The fourth proportional to 5,143.88, 7,099.20 and 2,905.86 is: 4,010.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.88 : 7,099.20 = 2,905.86 : x
  2. Step 2: Convert to fraction form
    5,143.88/7,099.20 = 2,905.86/x
  3. Step 3: Cross multiply
    5,143.88x = 7,099.20 × 2,905.86
  4. Step 4: Simplify right side
    5,143.88x = 20,629,281.31
  5. Step 5: Solve for x
    x = 20,629,281.31/5,143.88
  6. Step 6: Final answer
    x = 4,010.45

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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.