Home / 5,790.31-7,990.63-3,137.72

Finding the Fourth Proportional to 5,790.31, 7,990.63 and 3,137.72

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Solution

The fourth proportional to 5,790.31, 7,990.63 and 3,137.72 is: 4,330.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,790.31 : 7,990.63 = 3,137.72 : x
  2. Step 2: Convert to fraction form
    5,790.31/7,990.63 = 3,137.72/x
  3. Step 3: Cross multiply
    5,790.31x = 7,990.63 × 3,137.72
  4. Step 4: Simplify right side
    5,790.31x = 25,072,359.56
  5. Step 5: Solve for x
    x = 25,072,359.56/5,790.31
  6. Step 6: Final answer
    x = 4,330.05

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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.