Home / 3,218.15-4,828.44-1,271.72

Finding the Fourth Proportional to 3,218.15, 4,828.44 and 1,271.72

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Solution

The fourth proportional to 3,218.15, 4,828.44 and 1,271.72 is: 1,908.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.15 : 4,828.44 = 1,271.72 : x
  2. Step 2: Convert to fraction form
    3,218.15/4,828.44 = 1,271.72/x
  3. Step 3: Cross multiply
    3,218.15x = 4,828.44 × 1,271.72
  4. Step 4: Simplify right side
    3,218.15x = 6,140,399.57
  5. Step 5: Solve for x
    x = 6,140,399.57/3,218.15
  6. Step 6: Final answer
    x = 1,908.06

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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.