Home / 3,218.20-4,828.20-1,574.80

Finding the Fourth Proportional to 3,218.20, 4,828.20 and 1,574.80

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Solution

The fourth proportional to 3,218.20, 4,828.20 and 1,574.80 is: 2,362.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.20 : 4,828.20 = 1,574.80 : x
  2. Step 2: Convert to fraction form
    3,218.20/4,828.20 = 1,574.80/x
  3. Step 3: Cross multiply
    3,218.20x = 4,828.20 × 1,574.80
  4. Step 4: Simplify right side
    3,218.20x = 7,603,449.36
  5. Step 5: Solve for x
    x = 7,603,449.36/3,218.20
  6. Step 6: Final answer
    x = 2,362.64

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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.