Home / 6,399.06-8,830.77-3,880.62

Finding the Fourth Proportional to 6,399.06, 8,830.77 and 3,880.62

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Solution

The fourth proportional to 6,399.06, 8,830.77 and 3,880.62 is: 5,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,399.06 : 8,830.77 = 3,880.62 : x
  2. Step 2: Convert to fraction form
    6,399.06/8,830.77 = 3,880.62/x
  3. Step 3: Cross multiply
    6,399.06x = 8,830.77 × 3,880.62
  4. Step 4: Simplify right side
    6,399.06x = 34,268,862.68
  5. Step 5: Solve for x
    x = 34,268,862.68/6,399.06
  6. Step 6: Final answer
    x = 5,355.30

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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.