Home / 2,080.93-3,121.70-619.89

Finding the Fourth Proportional to 2,080.93, 3,121.70 and 619.89

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Solution

The fourth proportional to 2,080.93, 3,121.70 and 619.89 is: 929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.93 : 3,121.70 = 619.89 : x
  2. Step 2: Convert to fraction form
    2,080.93/3,121.70 = 619.89/x
  3. Step 3: Cross multiply
    2,080.93x = 3,121.70 × 619.89
  4. Step 4: Simplify right side
    2,080.93x = 1,935,110.61
  5. Step 5: Solve for x
    x = 1,935,110.61/2,080.93
  6. Step 6: Final answer
    x = 929.93

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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.