Home / 3,219.08-4,828.76-1,138.80

Finding the Fourth Proportional to 3,219.08, 4,828.76 and 1,138.80

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Solution

The fourth proportional to 3,219.08, 4,828.76 and 1,138.80 is: 1,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.08 : 4,828.76 = 1,138.80 : x
  2. Step 2: Convert to fraction form
    3,219.08/4,828.76 = 1,138.80/x
  3. Step 3: Cross multiply
    3,219.08x = 4,828.76 × 1,138.80
  4. Step 4: Simplify right side
    3,219.08x = 5,498,991.89
  5. Step 5: Solve for x
    x = 5,498,991.89/3,219.08
  6. Step 6: Final answer
    x = 1,708.25

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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.