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Finding the Fourth Proportional to 8,480.60, 12,728.66 and 4,323.59

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Solution

The fourth proportional to 8,480.60, 12,728.66 and 4,323.59 is: 6,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.60 : 12,728.66 = 4,323.59 : x
  2. Step 2: Convert to fraction form
    8,480.60/12,728.66 = 4,323.59/x
  3. Step 3: Cross multiply
    8,480.60x = 12,728.66 × 4,323.59
  4. Step 4: Simplify right side
    8,480.60x = 55,033,421.83
  5. Step 5: Solve for x
    x = 55,033,421.83/8,480.60
  6. Step 6: Final answer
    x = 6,489.33

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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.