Home / 3,179.16-4,385.61-1,919.52

Finding the Fourth Proportional to 3,179.16, 4,385.61 and 1,919.52

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Solution

The fourth proportional to 3,179.16, 4,385.61 and 1,919.52 is: 2,647.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.16 : 4,385.61 = 1,919.52 : x
  2. Step 2: Convert to fraction form
    3,179.16/4,385.61 = 1,919.52/x
  3. Step 3: Cross multiply
    3,179.16x = 4,385.61 × 1,919.52
  4. Step 4: Simplify right side
    3,179.16x = 8,418,266.11
  5. Step 5: Solve for x
    x = 8,418,266.11/3,179.16
  6. Step 6: Final answer
    x = 2,647.95

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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.