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Finding the Fourth Proportional to 8,681.81, 13,022.71 and 2,107.99

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Solution

The fourth proportional to 8,681.81, 13,022.71 and 2,107.99 is: 3,161.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.81 : 13,022.71 = 2,107.99 : x
  2. Step 2: Convert to fraction form
    8,681.81/13,022.71 = 2,107.99/x
  3. Step 3: Cross multiply
    8,681.81x = 13,022.71 × 2,107.99
  4. Step 4: Simplify right side
    8,681.81x = 27,451,704.63
  5. Step 5: Solve for x
    x = 27,451,704.63/8,681.81
  6. Step 6: Final answer
    x = 3,161.98

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1.5x scale

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.