Home / 6,621.88-9,137.46-3,969.40

Finding the Fourth Proportional to 6,621.88, 9,137.46 and 3,969.40

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Solution

The fourth proportional to 6,621.88, 9,137.46 and 3,969.40 is: 5,477.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.88 : 9,137.46 = 3,969.40 : x
  2. Step 2: Convert to fraction form
    6,621.88/9,137.46 = 3,969.40/x
  3. Step 3: Cross multiply
    6,621.88x = 9,137.46 × 3,969.40
  4. Step 4: Simplify right side
    6,621.88x = 36,270,233.72
  5. Step 5: Solve for x
    x = 36,270,233.72/6,621.88
  6. Step 6: Final answer
    x = 5,477.33

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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.