Home / 1,631.40-2,252.31-1,072.81

Finding the Fourth Proportional to 1,631.40, 2,252.31 and 1,072.81

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Solution

The fourth proportional to 1,631.40, 2,252.31 and 1,072.81 is: 1,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.40 : 2,252.31 = 1,072.81 : x
  2. Step 2: Convert to fraction form
    1,631.40/2,252.31 = 1,072.81/x
  3. Step 3: Cross multiply
    1,631.40x = 2,252.31 × 1,072.81
  4. Step 4: Simplify right side
    1,631.40x = 2,416,297.07
  5. Step 5: Solve for x
    x = 2,416,297.07/1,631.40
  6. Step 6: Final answer
    x = 1,481.12

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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.