Home / 4,811.87-7,220.37-1,890.20

Finding the Fourth Proportional to 4,811.87, 7,220.37 and 1,890.20

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Solution

The fourth proportional to 4,811.87, 7,220.37 and 1,890.20 is: 2,836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.87 : 7,220.37 = 1,890.20 : x
  2. Step 2: Convert to fraction form
    4,811.87/7,220.37 = 1,890.20/x
  3. Step 3: Cross multiply
    4,811.87x = 7,220.37 × 1,890.20
  4. Step 4: Simplify right side
    4,811.87x = 13,647,943.37
  5. Step 5: Solve for x
    x = 13,647,943.37/4,811.87
  6. Step 6: Final answer
    x = 2,836.31

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1.5x scale

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.