Home / 1,788.33-2,679.80-1,325.37

Finding the Fourth Proportional to 1,788.33, 2,679.80 and 1,325.37

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Solution

The fourth proportional to 1,788.33, 2,679.80 and 1,325.37 is: 1,986.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.33 : 2,679.80 = 1,325.37 : x
  2. Step 2: Convert to fraction form
    1,788.33/2,679.80 = 1,325.37/x
  3. Step 3: Cross multiply
    1,788.33x = 2,679.80 × 1,325.37
  4. Step 4: Simplify right side
    1,788.33x = 3,551,719.90
  5. Step 5: Solve for x
    x = 3,551,719.90/1,788.33
  6. Step 6: Final answer
    x = 1,986.05

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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.