Home / 6,919.80-10,379.67-4,147.30

Finding the Fourth Proportional to 6,919.80, 10,379.67 and 4,147.30

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Solution

The fourth proportional to 6,919.80, 10,379.67 and 4,147.30 is: 6,220.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.80 : 10,379.67 = 4,147.30 : x
  2. Step 2: Convert to fraction form
    6,919.80/10,379.67 = 4,147.30/x
  3. Step 3: Cross multiply
    6,919.80x = 10,379.67 × 4,147.30
  4. Step 4: Simplify right side
    6,919.80x = 43,047,605.39
  5. Step 5: Solve for x
    x = 43,047,605.39/6,919.80
  6. Step 6: Final answer
    x = 6,220.93

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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.