Home / 1,872.80-2,806.91-1,325.14

Finding the Fourth Proportional to 1,872.80, 2,806.91 and 1,325.14

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Solution

The fourth proportional to 1,872.80, 2,806.91 and 1,325.14 is: 1,986.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.80 : 2,806.91 = 1,325.14 : x
  2. Step 2: Convert to fraction form
    1,872.80/2,806.91 = 1,325.14/x
  3. Step 3: Cross multiply
    1,872.80x = 2,806.91 × 1,325.14
  4. Step 4: Simplify right side
    1,872.80x = 3,719,548.72
  5. Step 5: Solve for x
    x = 3,719,548.72/1,872.80
  6. Step 6: Final answer
    x = 1,986.09

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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.