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Finding the Fourth Proportional to 8,615.46, 12,926.72 and 3,069.86

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Solution

The fourth proportional to 8,615.46, 12,926.72 and 3,069.86 is: 4,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.46 : 12,926.72 = 3,069.86 : x
  2. Step 2: Convert to fraction form
    8,615.46/12,926.72 = 3,069.86/x
  3. Step 3: Cross multiply
    8,615.46x = 12,926.72 × 3,069.86
  4. Step 4: Simplify right side
    8,615.46x = 39,683,220.66
  5. Step 5: Solve for x
    x = 39,683,220.66/8,615.46
  6. Step 6: Final answer
    x = 4,606.05

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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.