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Finding the Fourth Proportional to 2,631.24, 3,946.01 and 964.98

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Solution

The fourth proportional to 2,631.24, 3,946.01 and 964.98 is: 1,447.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.24 : 3,946.01 = 964.98 : x
  2. Step 2: Convert to fraction form
    2,631.24/3,946.01 = 964.98/x
  3. Step 3: Cross multiply
    2,631.24x = 3,946.01 × 964.98
  4. Step 4: Simplify right side
    2,631.24x = 3,807,815.90
  5. Step 5: Solve for x
    x = 3,807,815.90/2,631.24
  6. Step 6: Final answer
    x = 1,447.16

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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.