Home / 6,485.31-9,731.88-2,589.39

Finding the Fourth Proportional to 6,485.31, 9,731.88 and 2,589.39

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Solution

The fourth proportional to 6,485.31, 9,731.88 and 2,589.39 is: 3,885.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.31 : 9,731.88 = 2,589.39 : x
  2. Step 2: Convert to fraction form
    6,485.31/9,731.88 = 2,589.39/x
  3. Step 3: Cross multiply
    6,485.31x = 9,731.88 × 2,589.39
  4. Step 4: Simplify right side
    6,485.31x = 25,199,632.75
  5. Step 5: Solve for x
    x = 25,199,632.75/6,485.31
  6. Step 6: Final answer
    x = 3,885.65

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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.