Home / 2,080.55-3,120.48-619.36

Finding the Fourth Proportional to 2,080.55, 3,120.48 and 619.36

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Solution

The fourth proportional to 2,080.55, 3,120.48 and 619.36 is: 928.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.55 : 3,120.48 = 619.36 : x
  2. Step 2: Convert to fraction form
    2,080.55/3,120.48 = 619.36/x
  3. Step 3: Cross multiply
    2,080.55x = 3,120.48 × 619.36
  4. Step 4: Simplify right side
    2,080.55x = 1,932,698.54
  5. Step 5: Solve for x
    x = 1,932,698.54/2,080.55
  6. Step 6: Final answer
    x = 928.94

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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.