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Finding the Fourth Proportional to 8,509.79, 12,751.51 and 4,343.96

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Solution

The fourth proportional to 8,509.79, 12,751.51 and 4,343.96 is: 6,509.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.79 : 12,751.51 = 4,343.96 : x
  2. Step 2: Convert to fraction form
    8,509.79/12,751.51 = 4,343.96/x
  3. Step 3: Cross multiply
    8,509.79x = 12,751.51 × 4,343.96
  4. Step 4: Simplify right side
    8,509.79x = 55,392,049.38
  5. Step 5: Solve for x
    x = 55,392,049.38/8,509.79
  6. Step 6: Final answer
    x = 6,509.21

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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.