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Finding the Fourth Proportional to 8,986.73, 13,479.62 and 3,439.65

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Solution

The fourth proportional to 8,986.73, 13,479.62 and 3,439.65 is: 5,159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.73 : 13,479.62 = 3,439.65 : x
  2. Step 2: Convert to fraction form
    8,986.73/13,479.62 = 3,439.65/x
  3. Step 3: Cross multiply
    8,986.73x = 13,479.62 × 3,439.65
  4. Step 4: Simplify right side
    8,986.73x = 46,365,157.73
  5. Step 5: Solve for x
    x = 46,365,157.73/8,986.73
  6. Step 6: Final answer
    x = 5,159.29

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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.