Home / 5,491.28-7,584.12-3,719.81

Finding the Fourth Proportional to 5,491.28, 7,584.12 and 3,719.81

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Solution

The fourth proportional to 5,491.28, 7,584.12 and 3,719.81 is: 5,137.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491.28 : 7,584.12 = 3,719.81 : x
  2. Step 2: Convert to fraction form
    5,491.28/7,584.12 = 3,719.81/x
  3. Step 3: Cross multiply
    5,491.28x = 7,584.12 × 3,719.81
  4. Step 4: Simplify right side
    5,491.28x = 28,211,485.42
  5. Step 5: Solve for x
    x = 28,211,485.42/5,491.28
  6. Step 6: Final answer
    x = 5,137.51

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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.