Home / 1,879.17-2,816.46-1,415.46

Finding the Fourth Proportional to 1,879.17, 2,816.46 and 1,415.46

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Solution

The fourth proportional to 1,879.17, 2,816.46 and 1,415.46 is: 2,121.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,879.17 : 2,816.46 = 1,415.46 : x
  2. Step 2: Convert to fraction form
    1,879.17/2,816.46 = 1,415.46/x
  3. Step 3: Cross multiply
    1,879.17x = 2,816.46 × 1,415.46
  4. Step 4: Simplify right side
    1,879.17x = 3,986,586.47
  5. Step 5: Solve for x
    x = 3,986,586.47/1,879.17
  6. Step 6: Final answer
    x = 2,121.46

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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.