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Finding the Fourth Proportional to 7,604.80, 11,375.20 and 6,830.40

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Solution

The fourth proportional to 7,604.80, 11,375.20 and 6,830.40 is: 10,216.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,604.80 : 11,375.20 = 6,830.40 : x
  2. Step 2: Convert to fraction form
    7,604.80/11,375.20 = 6,830.40/x
  3. Step 3: Cross multiply
    7,604.80x = 11,375.20 × 6,830.40
  4. Step 4: Simplify right side
    7,604.80x = 77,697,166.08
  5. Step 5: Solve for x
    x = 77,697,166.08/7,604.80
  6. Step 6: Final answer
    x = 10,216.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.