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Finding the Fourth Proportional to 8,696.53, 12,001.12 and 4,919.64

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Solution

The fourth proportional to 8,696.53, 12,001.12 and 4,919.64 is: 6,789.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.53 : 12,001.12 = 4,919.64 : x
  2. Step 2: Convert to fraction form
    8,696.53/12,001.12 = 4,919.64/x
  3. Step 3: Cross multiply
    8,696.53x = 12,001.12 × 4,919.64
  4. Step 4: Simplify right side
    8,696.53x = 59,041,190.00
  5. Step 5: Solve for x
    x = 59,041,190.00/8,696.53
  6. Step 6: Final answer
    x = 6,789.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.