Home / 4,218.75-6,328.14-2,020.80

Finding the Fourth Proportional to 4,218.75, 6,328.14 and 2,020.80

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Solution

The fourth proportional to 4,218.75, 6,328.14 and 2,020.80 is: 3,031.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.75 : 6,328.14 = 2,020.80 : x
  2. Step 2: Convert to fraction form
    4,218.75/6,328.14 = 2,020.80/x
  3. Step 3: Cross multiply
    4,218.75x = 6,328.14 × 2,020.80
  4. Step 4: Simplify right side
    4,218.75x = 12,787,905.31
  5. Step 5: Solve for x
    x = 12,787,905.31/4,218.75
  6. Step 6: Final answer
    x = 3,031.21

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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.