Home / 3,029.71-4,546.66-1,990.21

Finding the Fourth Proportional to 3,029.71, 4,546.66 and 1,990.21

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Solution

The fourth proportional to 3,029.71, 4,546.66 and 1,990.21 is: 2,986.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,029.71 : 4,546.66 = 1,990.21 : x
  2. Step 2: Convert to fraction form
    3,029.71/4,546.66 = 1,990.21/x
  3. Step 3: Cross multiply
    3,029.71x = 4,546.66 × 1,990.21
  4. Step 4: Simplify right side
    3,029.71x = 9,048,803.22
  5. Step 5: Solve for x
    x = 9,048,803.22/3,029.71
  6. Step 6: Final answer
    x = 2,986.69

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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.