Home / 2,717.14-4,072.86-1,328.56

Finding the Fourth Proportional to 2,717.14, 4,072.86 and 1,328.56

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Solution

The fourth proportional to 2,717.14, 4,072.86 and 1,328.56 is: 1,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.14 : 4,072.86 = 1,328.56 : x
  2. Step 2: Convert to fraction form
    2,717.14/4,072.86 = 1,328.56/x
  3. Step 3: Cross multiply
    2,717.14x = 4,072.86 × 1,328.56
  4. Step 4: Simplify right side
    2,717.14x = 5,411,038.88
  5. Step 5: Solve for x
    x = 5,411,038.88/2,717.14
  6. Step 6: Final answer
    x = 1,991.45

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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.