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Finding the Fourth Proportional to 8,605.94, 12,920.82 and 4,449.02

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Solution

The fourth proportional to 8,605.94, 12,920.82 and 4,449.02 is: 6,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.94 : 12,920.82 = 4,449.02 : x
  2. Step 2: Convert to fraction form
    8,605.94/12,920.82 = 4,449.02/x
  3. Step 3: Cross multiply
    8,605.94x = 12,920.82 × 4,449.02
  4. Step 4: Simplify right side
    8,605.94x = 57,484,986.60
  5. Step 5: Solve for x
    x = 57,484,986.60/8,605.94
  6. Step 6: Final answer
    x = 6,679.69

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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.