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Finding the Fourth Proportional to 7,195.42, 10,790.70 and 2,811.70

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Solution

The fourth proportional to 7,195.42, 10,790.70 and 2,811.70 is: 4,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,195.42 : 10,790.70 = 2,811.70 : x
  2. Step 2: Convert to fraction form
    7,195.42/10,790.70 = 2,811.70/x
  3. Step 3: Cross multiply
    7,195.42x = 10,790.70 × 2,811.70
  4. Step 4: Simplify right side
    7,195.42x = 30,340,211.19
  5. Step 5: Solve for x
    x = 30,340,211.19/7,195.42
  6. Step 6: Final answer
    x = 4,216.60

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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.