Home / 6,974.80-9,622.50-3,989.04

Finding the Fourth Proportional to 6,974.80, 9,622.50 and 3,989.04

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Solution

The fourth proportional to 6,974.80, 9,622.50 and 3,989.04 is: 5,503.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,974.80 : 9,622.50 = 3,989.04 : x
  2. Step 2: Convert to fraction form
    6,974.80/9,622.50 = 3,989.04/x
  3. Step 3: Cross multiply
    6,974.80x = 9,622.50 × 3,989.04
  4. Step 4: Simplify right side
    6,974.80x = 38,384,537.40
  5. Step 5: Solve for x
    x = 38,384,537.40/6,974.80
  6. Step 6: Final answer
    x = 5,503.32

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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.