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Finding the Fourth Proportional to 8,768.80, 13,153.20 and 2,612.80

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Solution

The fourth proportional to 8,768.80, 13,153.20 and 2,612.80 is: 3,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.80 : 13,153.20 = 2,612.80 : x
  2. Step 2: Convert to fraction form
    8,768.80/13,153.20 = 2,612.80/x
  3. Step 3: Cross multiply
    8,768.80x = 13,153.20 × 2,612.80
  4. Step 4: Simplify right side
    8,768.80x = 34,366,680.96
  5. Step 5: Solve for x
    x = 34,366,680.96/8,768.80
  6. Step 6: Final answer
    x = 3,919.20

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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.