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Finding the Fourth Proportional to 8,636.32, 11,918.14 and 4,859.70

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Solution

The fourth proportional to 8,636.32, 11,918.14 and 4,859.70 is: 6,706.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.32 : 11,918.14 = 4,859.70 : x
  2. Step 2: Convert to fraction form
    8,636.32/11,918.14 = 4,859.70/x
  3. Step 3: Cross multiply
    8,636.32x = 11,918.14 × 4,859.70
  4. Step 4: Simplify right side
    8,636.32x = 57,918,528.12
  5. Step 5: Solve for x
    x = 57,918,528.12/8,636.32
  6. Step 6: Final answer
    x = 6,706.39

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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.