Home / 6,621.03-9,136.73-3,969.90

Finding the Fourth Proportional to 6,621.03, 9,136.73 and 3,969.90

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Solution

The fourth proportional to 6,621.03, 9,136.73 and 3,969.90 is: 5,478.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.03 : 9,136.73 = 3,969.90 : x
  2. Step 2: Convert to fraction form
    6,621.03/9,136.73 = 3,969.90/x
  3. Step 3: Cross multiply
    6,621.03x = 9,136.73 × 3,969.90
  4. Step 4: Simplify right side
    6,621.03x = 36,271,884.58
  5. Step 5: Solve for x
    x = 36,271,884.58/6,621.03
  6. Step 6: Final answer
    x = 5,478.28

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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.