Home / 1,939.09-2,908.75-706.63

Finding the Fourth Proportional to 1,939.09, 2,908.75 and 706.63

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Solution

The fourth proportional to 1,939.09, 2,908.75 and 706.63 is: 1,059.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.09 : 2,908.75 = 706.63 : x
  2. Step 2: Convert to fraction form
    1,939.09/2,908.75 = 706.63/x
  3. Step 3: Cross multiply
    1,939.09x = 2,908.75 × 706.63
  4. Step 4: Simplify right side
    1,939.09x = 2,055,410.01
  5. Step 5: Solve for x
    x = 2,055,410.01/1,939.09
  6. Step 6: Final answer
    x = 1,059.99

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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.