Home / 1,267.03-1,901.89-1,121.69

Finding the Fourth Proportional to 1,267.03, 1,901.89 and 1,121.69

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Solution

The fourth proportional to 1,267.03, 1,901.89 and 1,121.69 is: 1,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.03 : 1,901.89 = 1,121.69 : x
  2. Step 2: Convert to fraction form
    1,267.03/1,901.89 = 1,121.69/x
  3. Step 3: Cross multiply
    1,267.03x = 1,901.89 × 1,121.69
  4. Step 4: Simplify right side
    1,267.03x = 2,133,330.99
  5. Step 5: Solve for x
    x = 2,133,330.99/1,267.03
  6. Step 6: Final answer
    x = 1,683.73

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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.