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Finding the Fourth Proportional to 6,990.70, 9,647.19 and 3,804.00

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Solution

The fourth proportional to 6,990.70, 9,647.19 and 3,804.00 is: 5,249.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.70 : 9,647.19 = 3,804.00 : x
  2. Step 2: Convert to fraction form
    6,990.70/9,647.19 = 3,804.00/x
  3. Step 3: Cross multiply
    6,990.70x = 9,647.19 × 3,804.00
  4. Step 4: Simplify right side
    6,990.70x = 36,697,900.69
  5. Step 5: Solve for x
    x = 36,697,900.69/6,990.70
  6. Step 6: Final answer
    x = 5,249.53

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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.