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Finding the Fourth Proportional to 7,290.80, 10,944.30 and 4,520.60

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Solution

The fourth proportional to 7,290.80, 10,944.30 and 4,520.60 is: 6,785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.80 : 10,944.30 = 4,520.60 : x
  2. Step 2: Convert to fraction form
    7,290.80/10,944.30 = 4,520.60/x
  3. Step 3: Cross multiply
    7,290.80x = 10,944.30 × 4,520.60
  4. Step 4: Simplify right side
    7,290.80x = 49,474,802.58
  5. Step 5: Solve for x
    x = 49,474,802.58/7,290.80
  6. Step 6: Final answer
    x = 6,785.92

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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.