Home / 2,080.79-3,121.56-619.77

Finding the Fourth Proportional to 2,080.79, 3,121.56 and 619.77

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Solution

The fourth proportional to 2,080.79, 3,121.56 and 619.77 is: 929.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.79 : 3,121.56 = 619.77 : x
  2. Step 2: Convert to fraction form
    2,080.79/3,121.56 = 619.77/x
  3. Step 3: Cross multiply
    2,080.79x = 3,121.56 × 619.77
  4. Step 4: Simplify right side
    2,080.79x = 1,934,649.24
  5. Step 5: Solve for x
    x = 1,934,649.24/2,080.79
  6. Step 6: Final answer
    x = 929.77

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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.