Home / 3,823.65-5,728.93-2,990.39

Finding the Fourth Proportional to 3,823.65, 5,728.93 and 2,990.39

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Solution

The fourth proportional to 3,823.65, 5,728.93 and 2,990.39 is: 4,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,823.65 : 5,728.93 = 2,990.39 : x
  2. Step 2: Convert to fraction form
    3,823.65/5,728.93 = 2,990.39/x
  3. Step 3: Cross multiply
    3,823.65x = 5,728.93 × 2,990.39
  4. Step 4: Simplify right side
    3,823.65x = 17,131,734.98
  5. Step 5: Solve for x
    x = 17,131,734.98/3,823.65
  6. Step 6: Final answer
    x = 4,480.47

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1.5x scale

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.