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Finding the Fourth Proportional to 6,993.90, 9,651.15 and 6,436.62

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Solution

The fourth proportional to 6,993.90, 9,651.15 and 6,436.62 is: 8,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,993.90 : 9,651.15 = 6,436.62 : x
  2. Step 2: Convert to fraction form
    6,993.90/9,651.15 = 6,436.62/x
  3. Step 3: Cross multiply
    6,993.90x = 9,651.15 × 6,436.62
  4. Step 4: Simplify right side
    6,993.90x = 62,120,785.11
  5. Step 5: Solve for x
    x = 62,120,785.11/6,993.90
  6. Step 6: Final answer
    x = 8,882.14

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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.