Home / 3,719.84-5,579.76-1,122.78

Finding the Fourth Proportional to 3,719.84, 5,579.76 and 1,122.78

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Solution

The fourth proportional to 3,719.84, 5,579.76 and 1,122.78 is: 1,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.84 : 5,579.76 = 1,122.78 : x
  2. Step 2: Convert to fraction form
    3,719.84/5,579.76 = 1,122.78/x
  3. Step 3: Cross multiply
    3,719.84x = 5,579.76 × 1,122.78
  4. Step 4: Simplify right side
    3,719.84x = 6,264,842.93
  5. Step 5: Solve for x
    x = 6,264,842.93/3,719.84
  6. Step 6: Final answer
    x = 1,684.17

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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.