Home / 2,820.80-4,231.93-1,651.79

Finding the Fourth Proportional to 2,820.80, 4,231.93 and 1,651.79

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Solution

The fourth proportional to 2,820.80, 4,231.93 and 1,651.79 is: 2,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.80 : 4,231.93 = 1,651.79 : x
  2. Step 2: Convert to fraction form
    2,820.80/4,231.93 = 1,651.79/x
  3. Step 3: Cross multiply
    2,820.80x = 4,231.93 × 1,651.79
  4. Step 4: Simplify right side
    2,820.80x = 6,990,259.65
  5. Step 5: Solve for x
    x = 6,990,259.65/2,820.80
  6. Step 6: Final answer
    x = 2,478.11

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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.