Home / 1,966.30-2,942.03-1,172.72

Finding the Fourth Proportional to 1,966.30, 2,942.03 and 1,172.72

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Solution

The fourth proportional to 1,966.30, 2,942.03 and 1,172.72 is: 1,754.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.30 : 2,942.03 = 1,172.72 : x
  2. Step 2: Convert to fraction form
    1,966.30/2,942.03 = 1,172.72/x
  3. Step 3: Cross multiply
    1,966.30x = 2,942.03 × 1,172.72
  4. Step 4: Simplify right side
    1,966.30x = 3,450,187.71
  5. Step 5: Solve for x
    x = 3,450,187.71/1,966.30
  6. Step 6: Final answer
    x = 1,754.66

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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.