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Finding the Fourth Proportional to 5,680.12, 8,550.08 and 5,181.88

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Solution

The fourth proportional to 5,680.12, 8,550.08 and 5,181.88 is: 7,800.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.12 : 8,550.08 = 5,181.88 : x
  2. Step 2: Convert to fraction form
    5,680.12/8,550.08 = 5,181.88/x
  3. Step 3: Cross multiply
    5,680.12x = 8,550.08 × 5,181.88
  4. Step 4: Simplify right side
    5,680.12x = 44,305,488.55
  5. Step 5: Solve for x
    x = 44,305,488.55/5,680.12
  6. Step 6: Final answer
    x = 7,800.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.