Home / 1,266.19-1,889.62-1,127.80

Finding the Fourth Proportional to 1,266.19, 1,889.62 and 1,127.80

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Solution

The fourth proportional to 1,266.19, 1,889.62 and 1,127.80 is: 1,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.19 : 1,889.62 = 1,127.80 : x
  2. Step 2: Convert to fraction form
    1,266.19/1,889.62 = 1,127.80/x
  3. Step 3: Cross multiply
    1,266.19x = 1,889.62 × 1,127.80
  4. Step 4: Simplify right side
    1,266.19x = 2,131,110.84
  5. Step 5: Solve for x
    x = 2,131,110.84/1,266.19
  6. Step 6: Final answer
    x = 1,683.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.