Home / 6,919.07-10,378.31-3,220.02

Finding the Fourth Proportional to 6,919.07, 10,378.31 and 3,220.02

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Solution

The fourth proportional to 6,919.07, 10,378.31 and 3,220.02 is: 4,829.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.07 : 10,378.31 = 3,220.02 : x
  2. Step 2: Convert to fraction form
    6,919.07/10,378.31 = 3,220.02/x
  3. Step 3: Cross multiply
    6,919.07x = 10,378.31 × 3,220.02
  4. Step 4: Simplify right side
    6,919.07x = 33,418,349.67
  5. Step 5: Solve for x
    x = 33,418,349.67/6,919.07
  6. Step 6: Final answer
    x = 4,829.89

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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.