Home / 8,287.79-12,431.44-2,047.86

Finding the Fourth Proportional to 8,287.79, 12,431.44 and 2,047.86

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Solution

The fourth proportional to 8,287.79, 12,431.44 and 2,047.86 is: 3,071.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,287.79 : 12,431.44 = 2,047.86 : x
  2. Step 2: Convert to fraction form
    8,287.79/12,431.44 = 2,047.86/x
  3. Step 3: Cross multiply
    8,287.79x = 12,431.44 × 2,047.86
  4. Step 4: Simplify right side
    8,287.79x = 25,457,848.72
  5. Step 5: Solve for x
    x = 25,457,848.72/8,287.79
  6. Step 6: Final answer
    x = 3,071.73

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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.