Home / 3,038.21-4,194.79-1,920.11

Finding the Fourth Proportional to 3,038.21, 4,194.79 and 1,920.11

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Solution

The fourth proportional to 3,038.21, 4,194.79 and 1,920.11 is: 2,651.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,038.21 : 4,194.79 = 1,920.11 : x
  2. Step 2: Convert to fraction form
    3,038.21/4,194.79 = 1,920.11/x
  3. Step 3: Cross multiply
    3,038.21x = 4,194.79 × 1,920.11
  4. Step 4: Simplify right side
    3,038.21x = 8,054,432.45
  5. Step 5: Solve for x
    x = 8,054,432.45/3,038.21
  6. Step 6: Final answer
    x = 2,651.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.