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Finding the Fourth Proportional to 8,636.85, 11,919.13 and 4,859.93

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Solution

The fourth proportional to 8,636.85, 11,919.13 and 4,859.93 is: 6,706.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.85 : 11,919.13 = 4,859.93 : x
  2. Step 2: Convert to fraction form
    8,636.85/11,919.13 = 4,859.93/x
  3. Step 3: Cross multiply
    8,636.85x = 11,919.13 × 4,859.93
  4. Step 4: Simplify right side
    8,636.85x = 57,926,155.11
  5. Step 5: Solve for x
    x = 57,926,155.11/8,636.85
  6. Step 6: Final answer
    x = 6,706.86

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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.