Home / 1,929.06-2,662.09-1,089.75

Finding the Fourth Proportional to 1,929.06, 2,662.09 and 1,089.75

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Solution

The fourth proportional to 1,929.06, 2,662.09 and 1,089.75 is: 1,503.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.06 : 2,662.09 = 1,089.75 : x
  2. Step 2: Convert to fraction form
    1,929.06/2,662.09 = 1,089.75/x
  3. Step 3: Cross multiply
    1,929.06x = 2,662.09 × 1,089.75
  4. Step 4: Simplify right side
    1,929.06x = 2,901,012.58
  5. Step 5: Solve for x
    x = 2,901,012.58/1,929.06
  6. Step 6: Final answer
    x = 1,503.85

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1.5x scale

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.