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Finding the Fourth Proportional to 8,681.79, 13,014.96 and 3,133.90

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Solution

The fourth proportional to 8,681.79, 13,014.96 and 3,133.90 is: 4,698.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.79 : 13,014.96 = 3,133.90 : x
  2. Step 2: Convert to fraction form
    8,681.79/13,014.96 = 3,133.90/x
  3. Step 3: Cross multiply
    8,681.79x = 13,014.96 × 3,133.90
  4. Step 4: Simplify right side
    8,681.79x = 40,787,607.06
  5. Step 5: Solve for x
    x = 40,787,607.06/8,681.79
  6. Step 6: Final answer
    x = 4,698.06

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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.