Home / 1,929.89-2,664.39-1,267.89

Finding the Fourth Proportional to 1,929.89, 2,664.39 and 1,267.89

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Solution

The fourth proportional to 1,929.89, 2,664.39 and 1,267.89 is: 1,750.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.89 : 2,664.39 = 1,267.89 : x
  2. Step 2: Convert to fraction form
    1,929.89/2,664.39 = 1,267.89/x
  3. Step 3: Cross multiply
    1,929.89x = 2,664.39 × 1,267.89
  4. Step 4: Simplify right side
    1,929.89x = 3,378,153.44
  5. Step 5: Solve for x
    x = 3,378,153.44/1,929.89
  6. Step 6: Final answer
    x = 1,750.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.