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Finding the Fourth Proportional to 7,419.00, 11,121.09 and 3,709.90

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Solution

The fourth proportional to 7,419.00, 11,121.09 and 3,709.90 is: 5,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.00 : 11,121.09 = 3,709.90 : x
  2. Step 2: Convert to fraction form
    7,419.00/11,121.09 = 3,709.90/x
  3. Step 3: Cross multiply
    7,419.00x = 11,121.09 × 3,709.90
  4. Step 4: Simplify right side
    7,419.00x = 41,258,131.79
  5. Step 5: Solve for x
    x = 41,258,131.79/7,419.00
  6. Step 6: Final answer
    x = 5,561.15

Related Problems

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Half scale
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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.