Home / 3,021.84-4,531.80-1,290

Finding the Fourth Proportional to 3,021.84, 4,531.80 and 1,290

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Solution

The fourth proportional to 3,021.84, 4,531.80 and 1,290 is: 1,934.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.84 : 4,531.80 = 1,290 : x
  2. Step 2: Convert to fraction form
    3,021.84/4,531.80 = 1,290/x
  3. Step 3: Cross multiply
    3,021.84x = 4,531.80 × 1,290
  4. Step 4: Simplify right side
    3,021.84x = 5,846,022
  5. Step 5: Solve for x
    x = 5,846,022/3,021.84
  6. Step 6: Final answer
    x = 1,934.59

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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.