Home / 3,121.61-4,684.14-1,042.25

Finding the Fourth Proportional to 3,121.61, 4,684.14 and 1,042.25

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Solution

The fourth proportional to 3,121.61, 4,684.14 and 1,042.25 is: 1,563.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.61 : 4,684.14 = 1,042.25 : x
  2. Step 2: Convert to fraction form
    3,121.61/4,684.14 = 1,042.25/x
  3. Step 3: Cross multiply
    3,121.61x = 4,684.14 × 1,042.25
  4. Step 4: Simplify right side
    3,121.61x = 4,882,021.49
  5. Step 5: Solve for x
    x = 4,882,021.49/3,121.61
  6. Step 6: Final answer
    x = 1,563.95

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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.