Home / 6,919.88-10,379.72-3,220.04

Finding the Fourth Proportional to 6,919.88, 10,379.72 and 3,220.04

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Solution

The fourth proportional to 6,919.88, 10,379.72 and 3,220.04 is: 4,830.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.88 : 10,379.72 = 3,220.04 : x
  2. Step 2: Convert to fraction form
    6,919.88/10,379.72 = 3,220.04/x
  3. Step 3: Cross multiply
    6,919.88x = 10,379.72 × 3,220.04
  4. Step 4: Simplify right side
    6,919.88x = 33,423,045.59
  5. Step 5: Solve for x
    x = 33,423,045.59/6,919.88
  6. Step 6: Final answer
    x = 4,830.01

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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.