Home / 7,815.34-10,790.20-6,974.60

Finding the Fourth Proportional to 7,815.34, 10,790.20 and 6,974.60

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Solution

The fourth proportional to 7,815.34, 10,790.20 and 6,974.60 is: 9,629.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.34 : 10,790.20 = 6,974.60 : x
  2. Step 2: Convert to fraction form
    7,815.34/10,790.20 = 6,974.60/x
  3. Step 3: Cross multiply
    7,815.34x = 10,790.20 × 6,974.60
  4. Step 4: Simplify right side
    7,815.34x = 75,257,324.15
  5. Step 5: Solve for x
    x = 75,257,324.15/7,815.34
  6. Step 6: Final answer
    x = 9,629.44

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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.