Home / 5,211.36-7,821.64-2,439.52

Finding the Fourth Proportional to 5,211.36, 7,821.64 and 2,439.52

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Solution

The fourth proportional to 5,211.36, 7,821.64 and 2,439.52 is: 3,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.36 : 7,821.64 = 2,439.52 : x
  2. Step 2: Convert to fraction form
    5,211.36/7,821.64 = 2,439.52/x
  3. Step 3: Cross multiply
    5,211.36x = 7,821.64 × 2,439.52
  4. Step 4: Simplify right side
    5,211.36x = 19,081,047.21
  5. Step 5: Solve for x
    x = 19,081,047.21/5,211.36
  6. Step 6: Final answer
    x = 3,661.43

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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.