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Finding the Fourth Proportional to 8,706.65, 13,055.06 and 2,782.14

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Solution

The fourth proportional to 8,706.65, 13,055.06 and 2,782.14 is: 4,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.65 : 13,055.06 = 2,782.14 : x
  2. Step 2: Convert to fraction form
    8,706.65/13,055.06 = 2,782.14/x
  3. Step 3: Cross multiply
    8,706.65x = 13,055.06 × 2,782.14
  4. Step 4: Simplify right side
    8,706.65x = 36,321,004.63
  5. Step 5: Solve for x
    x = 36,321,004.63/8,706.65
  6. Step 6: Final answer
    x = 4,171.64

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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.