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Finding the Fourth Proportional to 3,145.70, 4,718.30 and 954.44

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Solution

The fourth proportional to 3,145.70, 4,718.30 and 954.44 is: 1,431.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.70 : 4,718.30 = 954.44 : x
  2. Step 2: Convert to fraction form
    3,145.70/4,718.30 = 954.44/x
  3. Step 3: Cross multiply
    3,145.70x = 4,718.30 × 954.44
  4. Step 4: Simplify right side
    3,145.70x = 4,503,313.05
  5. Step 5: Solve for x
    x = 4,503,313.05/3,145.70
  6. Step 6: Final answer
    x = 1,431.58

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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.