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Finding the Fourth Proportional to 6,609.87, 9,914.20 and 1,931.11

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Solution

The fourth proportional to 6,609.87, 9,914.20 and 1,931.11 is: 2,896.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.87 : 9,914.20 = 1,931.11 : x
  2. Step 2: Convert to fraction form
    6,609.87/9,914.20 = 1,931.11/x
  3. Step 3: Cross multiply
    6,609.87x = 9,914.20 × 1,931.11
  4. Step 4: Simplify right side
    6,609.87x = 19,145,381.15
  5. Step 5: Solve for x
    x = 19,145,381.15/6,609.87
  6. Step 6: Final answer
    x = 2,896.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.