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Finding the Fourth Proportional to 6,636, 9,955.80 and 2,019

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Solution

The fourth proportional to 6,636, 9,955.80 and 2,019 is: 3,029.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,636 : 9,955.80 = 2,019 : x
  2. Step 2: Convert to fraction form
    6,636/9,955.80 = 2,019/x
  3. Step 3: Cross multiply
    6,636x = 9,955.80 × 2,019
  4. Step 4: Simplify right side
    6,636x = 20,100,760.20
  5. Step 5: Solve for x
    x = 20,100,760.20/6,636
  6. Step 6: Final answer
    x = 3,029.05

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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.