Home / 1,266.53-1,895.75-680.09

Finding the Fourth Proportional to 1,266.53, 1,895.75 and 680.09

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Solution

The fourth proportional to 1,266.53, 1,895.75 and 680.09 is: 1,017.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.53 : 1,895.75 = 680.09 : x
  2. Step 2: Convert to fraction form
    1,266.53/1,895.75 = 680.09/x
  3. Step 3: Cross multiply
    1,266.53x = 1,895.75 × 680.09
  4. Step 4: Simplify right side
    1,266.53x = 1,289,287.06
  5. Step 5: Solve for x
    x = 1,289,287.06/1,266.53
  6. Step 6: Final answer
    x = 1,017.97

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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.