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Finding the Fourth Proportional to 8,789.60, 13,175.20 and 8,068.16

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Solution

The fourth proportional to 8,789.60, 13,175.20 and 8,068.16 is: 12,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.60 : 13,175.20 = 8,068.16 : x
  2. Step 2: Convert to fraction form
    8,789.60/13,175.20 = 8,068.16/x
  3. Step 3: Cross multiply
    8,789.60x = 13,175.20 × 8,068.16
  4. Step 4: Simplify right side
    8,789.60x = 106,299,621.63
  5. Step 5: Solve for x
    x = 106,299,621.63/8,789.60
  6. Step 6: Final answer
    x = 12,093.80

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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.