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Finding the Fourth Proportional to 3,719.84, 5,133.54 and 2,228

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Solution

The fourth proportional to 3,719.84, 5,133.54 and 2,228 is: 3,074.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.84 : 5,133.54 = 2,228 : x
  2. Step 2: Convert to fraction form
    3,719.84/5,133.54 = 2,228/x
  3. Step 3: Cross multiply
    3,719.84x = 5,133.54 × 2,228
  4. Step 4: Simplify right side
    3,719.84x = 11,437,527.12
  5. Step 5: Solve for x
    x = 11,437,527.12/3,719.84
  6. Step 6: Final answer
    x = 3,074.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.