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Finding the Fourth Proportional to 3,827.64, 5,741.46 and 1,230.78

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Solution

The fourth proportional to 3,827.64, 5,741.46 and 1,230.78 is: 1,846.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,827.64 : 5,741.46 = 1,230.78 : x
  2. Step 2: Convert to fraction form
    3,827.64/5,741.46 = 1,230.78/x
  3. Step 3: Cross multiply
    3,827.64x = 5,741.46 × 1,230.78
  4. Step 4: Simplify right side
    3,827.64x = 7,066,474.14
  5. Step 5: Solve for x
    x = 7,066,474.14/3,827.64
  6. Step 6: Final answer
    x = 1,846.17

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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.