Home / 6,804.20-9,389.78-3,971.36

Finding the Fourth Proportional to 6,804.20, 9,389.78 and 3,971.36

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Solution

The fourth proportional to 6,804.20, 9,389.78 and 3,971.36 is: 5,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,804.20 : 9,389.78 = 3,971.36 : x
  2. Step 2: Convert to fraction form
    6,804.20/9,389.78 = 3,971.36/x
  3. Step 3: Cross multiply
    6,804.20x = 9,389.78 × 3,971.36
  4. Step 4: Simplify right side
    6,804.20x = 37,290,196.70
  5. Step 5: Solve for x
    x = 37,290,196.70/6,804.20
  6. Step 6: Final answer
    x = 5,480.47

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1.5x scale

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.