Home / 2,080.98-3,121.47-621.27

Finding the Fourth Proportional to 2,080.98, 3,121.47 and 621.27

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Solution

The fourth proportional to 2,080.98, 3,121.47 and 621.27 is: 931.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.98 : 3,121.47 = 621.27 : x
  2. Step 2: Convert to fraction form
    2,080.98/3,121.47 = 621.27/x
  3. Step 3: Cross multiply
    2,080.98x = 3,121.47 × 621.27
  4. Step 4: Simplify right side
    2,080.98x = 1,939,275.67
  5. Step 5: Solve for x
    x = 1,939,275.67/2,080.98
  6. Step 6: Final answer
    x = 931.91

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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.