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Finding the Fourth Proportional to 6,993.04, 9,660.99 and 5,221.57

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Solution

The fourth proportional to 6,993.04, 9,660.99 and 5,221.57 is: 7,213.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,993.04 : 9,660.99 = 5,221.57 : x
  2. Step 2: Convert to fraction form
    6,993.04/9,660.99 = 5,221.57/x
  3. Step 3: Cross multiply
    6,993.04x = 9,660.99 × 5,221.57
  4. Step 4: Simplify right side
    6,993.04x = 50,445,535.55
  5. Step 5: Solve for x
    x = 50,445,535.55/6,993.04
  6. Step 6: Final answer
    x = 7,213.68

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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.