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Finding the Fourth Proportional to 8,486.60, 11,708.82 and 4,949.12

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Solution

The fourth proportional to 8,486.60, 11,708.82 and 4,949.12 is: 6,828.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.60 : 11,708.82 = 4,949.12 : x
  2. Step 2: Convert to fraction form
    8,486.60/11,708.82 = 4,949.12/x
  3. Step 3: Cross multiply
    8,486.60x = 11,708.82 × 4,949.12
  4. Step 4: Simplify right side
    8,486.60x = 57,948,355.24
  5. Step 5: Solve for x
    x = 57,948,355.24/8,486.60
  6. Step 6: Final answer
    x = 6,828.22

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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.