Home / 1,316.70-1,974.60-667.26

Finding the Fourth Proportional to 1,316.70, 1,974.60 and 667.26

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Solution

The fourth proportional to 1,316.70, 1,974.60 and 667.26 is: 1,000.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.70 : 1,974.60 = 667.26 : x
  2. Step 2: Convert to fraction form
    1,316.70/1,974.60 = 667.26/x
  3. Step 3: Cross multiply
    1,316.70x = 1,974.60 × 667.26
  4. Step 4: Simplify right side
    1,316.70x = 1,317,571.60
  5. Step 5: Solve for x
    x = 1,317,571.60/1,316.70
  6. Step 6: Final answer
    x = 1,000.66

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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.