Home / 3,719.89-5,579.68-1,122.75

Finding the Fourth Proportional to 3,719.89, 5,579.68 and 1,122.75

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Solution

The fourth proportional to 3,719.89, 5,579.68 and 1,122.75 is: 1,684.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.89 : 5,579.68 = 1,122.75 : x
  2. Step 2: Convert to fraction form
    3,719.89/5,579.68 = 1,122.75/x
  3. Step 3: Cross multiply
    3,719.89x = 5,579.68 × 1,122.75
  4. Step 4: Simplify right side
    3,719.89x = 6,264,580.11
  5. Step 5: Solve for x
    x = 6,264,580.11/3,719.89
  6. Step 6: Final answer
    x = 1,684.08

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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.