Home / 1,279.53-1,929.94-1,127.36

Finding the Fourth Proportional to 1,279.53, 1,929.94 and 1,127.36

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Solution

The fourth proportional to 1,279.53, 1,929.94 and 1,127.36 is: 1,700.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.53 : 1,929.94 = 1,127.36 : x
  2. Step 2: Convert to fraction form
    1,279.53/1,929.94 = 1,127.36/x
  3. Step 3: Cross multiply
    1,279.53x = 1,929.94 × 1,127.36
  4. Step 4: Simplify right side
    1,279.53x = 2,175,739.16
  5. Step 5: Solve for x
    x = 2,175,739.16/1,279.53
  6. Step 6: Final answer
    x = 1,700.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.