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Finding the Fourth Proportional to 8,348.80, 11,486.80 and 6,347.68

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Solution

The fourth proportional to 8,348.80, 11,486.80 and 6,347.68 is: 8,733.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.80 : 11,486.80 = 6,347.68 : x
  2. Step 2: Convert to fraction form
    8,348.80/11,486.80 = 6,347.68/x
  3. Step 3: Cross multiply
    8,348.80x = 11,486.80 × 6,347.68
  4. Step 4: Simplify right side
    8,348.80x = 72,914,530.62
  5. Step 5: Solve for x
    x = 72,914,530.62/8,348.80
  6. Step 6: Final answer
    x = 8,733.53

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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.