Home / 2,907.91-4,013.94-1,728.97

Finding the Fourth Proportional to 2,907.91, 4,013.94 and 1,728.97

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Solution

The fourth proportional to 2,907.91, 4,013.94 and 1,728.97 is: 2,386.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.91 : 4,013.94 = 1,728.97 : x
  2. Step 2: Convert to fraction form
    2,907.91/4,013.94 = 1,728.97/x
  3. Step 3: Cross multiply
    2,907.91x = 4,013.94 × 1,728.97
  4. Step 4: Simplify right side
    2,907.91x = 6,939,981.84
  5. Step 5: Solve for x
    x = 6,939,981.84/2,907.91
  6. Step 6: Final answer
    x = 2,386.59

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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.