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Finding the Fourth Proportional to 8,681.81, 13,020.03 and 3,134.44

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Solution

The fourth proportional to 8,681.81, 13,020.03 and 3,134.44 is: 4,700.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.81 : 13,020.03 = 3,134.44 : x
  2. Step 2: Convert to fraction form
    8,681.81/13,020.03 = 3,134.44/x
  3. Step 3: Cross multiply
    8,681.81x = 13,020.03 × 3,134.44
  4. Step 4: Simplify right side
    8,681.81x = 40,810,502.83
  5. Step 5: Solve for x
    x = 40,810,502.83/8,681.81
  6. Step 6: Final answer
    x = 4,700.69

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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.