Home / 5,128.31-7,689.53-3,049.77

Finding the Fourth Proportional to 5,128.31, 7,689.53 and 3,049.77

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Solution

The fourth proportional to 5,128.31, 7,689.53 and 3,049.77 is: 4,572.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.31 : 7,689.53 = 3,049.77 : x
  2. Step 2: Convert to fraction form
    5,128.31/7,689.53 = 3,049.77/x
  3. Step 3: Cross multiply
    5,128.31x = 7,689.53 × 3,049.77
  4. Step 4: Simplify right side
    5,128.31x = 23,451,334.37
  5. Step 5: Solve for x
    x = 23,451,334.37/5,128.31
  6. Step 6: Final answer
    x = 4,572.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.