Home / 1,939.68-2,907.63-1,072.17

Finding the Fourth Proportional to 1,939.68, 2,907.63 and 1,072.17

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Solution

The fourth proportional to 1,939.68, 2,907.63 and 1,072.17 is: 1,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.68 : 2,907.63 = 1,072.17 : x
  2. Step 2: Convert to fraction form
    1,939.68/2,907.63 = 1,072.17/x
  3. Step 3: Cross multiply
    1,939.68x = 2,907.63 × 1,072.17
  4. Step 4: Simplify right side
    1,939.68x = 3,117,473.66
  5. Step 5: Solve for x
    x = 3,117,473.66/1,939.68
  6. Step 6: Final answer
    x = 1,607.21

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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.