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Finding the Fourth Proportional to 6,609.76, 9,118.96 and 4,219.82

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Solution

The fourth proportional to 6,609.76, 9,118.96 and 4,219.82 is: 5,821.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.76 : 9,118.96 = 4,219.82 : x
  2. Step 2: Convert to fraction form
    6,609.76/9,118.96 = 4,219.82/x
  3. Step 3: Cross multiply
    6,609.76x = 9,118.96 × 4,219.82
  4. Step 4: Simplify right side
    6,609.76x = 38,480,348.69
  5. Step 5: Solve for x
    x = 38,480,348.69/6,609.76
  6. Step 6: Final answer
    x = 5,821.75

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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.