Home / 1,911.69-2,637.93-1,072.41

Finding the Fourth Proportional to 1,911.69, 2,637.93 and 1,072.41

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Solution

The fourth proportional to 1,911.69, 2,637.93 and 1,072.41 is: 1,479.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.69 : 2,637.93 = 1,072.41 : x
  2. Step 2: Convert to fraction form
    1,911.69/2,637.93 = 1,072.41/x
  3. Step 3: Cross multiply
    1,911.69x = 2,637.93 × 1,072.41
  4. Step 4: Simplify right side
    1,911.69x = 2,828,942.51
  5. Step 5: Solve for x
    x = 2,828,942.51/1,911.69
  6. Step 6: Final answer
    x = 1,479.81

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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.