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Finding the Fourth Proportional to 2,803.46, 3,864.73 and 1,961.56

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Solution

The fourth proportional to 2,803.46, 3,864.73 and 1,961.56 is: 2,704.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.46 : 3,864.73 = 1,961.56 : x
  2. Step 2: Convert to fraction form
    2,803.46/3,864.73 = 1,961.56/x
  3. Step 3: Cross multiply
    2,803.46x = 3,864.73 × 1,961.56
  4. Step 4: Simplify right side
    2,803.46x = 7,580,880.46
  5. Step 5: Solve for x
    x = 7,580,880.46/2,803.46
  6. Step 6: Final answer
    x = 2,704.12

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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.