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Finding the Fourth Proportional to 8,605.22, 12,907.06 and 2,681.85

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Solution

The fourth proportional to 8,605.22, 12,907.06 and 2,681.85 is: 4,022.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.22 : 12,907.06 = 2,681.85 : x
  2. Step 2: Convert to fraction form
    8,605.22/12,907.06 = 2,681.85/x
  3. Step 3: Cross multiply
    8,605.22x = 12,907.06 × 2,681.85
  4. Step 4: Simplify right side
    8,605.22x = 34,614,785.45
  5. Step 5: Solve for x
    x = 34,614,785.45/8,605.22
  6. Step 6: Final answer
    x = 4,022.54

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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.