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Finding the Fourth Proportional to 8,616.05, 11,889.16 and 4,838.71

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Solution

The fourth proportional to 8,616.05, 11,889.16 and 4,838.71 is: 6,676.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.05 : 11,889.16 = 4,838.71 : x
  2. Step 2: Convert to fraction form
    8,616.05/11,889.16 = 4,838.71/x
  3. Step 3: Cross multiply
    8,616.05x = 11,889.16 × 4,838.71
  4. Step 4: Simplify right side
    8,616.05x = 57,528,197.38
  5. Step 5: Solve for x
    x = 57,528,197.38/8,616.05
  6. Step 6: Final answer
    x = 6,676.86

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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.