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Finding the Fourth Proportional to 6,998.11, 9,657.21 and 3,973.79

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Solution

The fourth proportional to 6,998.11, 9,657.21 and 3,973.79 is: 5,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,998.11 : 9,657.21 = 3,973.79 : x
  2. Step 2: Convert to fraction form
    6,998.11/9,657.21 = 3,973.79/x
  3. Step 3: Cross multiply
    6,998.11x = 9,657.21 × 3,973.79
  4. Step 4: Simplify right side
    6,998.11x = 38,375,763.57
  5. Step 5: Solve for x
    x = 38,375,763.57/6,998.11
  6. Step 6: Final answer
    x = 5,483.73

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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.