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Finding the Fourth Proportional to 8,771.65, 13,148.28 and 4,087.79

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Solution

The fourth proportional to 8,771.65, 13,148.28 and 4,087.79 is: 6,127.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.65 : 13,148.28 = 4,087.79 : x
  2. Step 2: Convert to fraction form
    8,771.65/13,148.28 = 4,087.79/x
  3. Step 3: Cross multiply
    8,771.65x = 13,148.28 × 4,087.79
  4. Step 4: Simplify right side
    8,771.65x = 53,747,392.17
  5. Step 5: Solve for x
    x = 53,747,392.17/8,771.65
  6. Step 6: Final answer
    x = 6,127.40

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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.