Home / 3,189.83-4,783.91-1,215.63

Finding the Fourth Proportional to 3,189.83, 4,783.91 and 1,215.63

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Solution

The fourth proportional to 3,189.83, 4,783.91 and 1,215.63 is: 1,823.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.83 : 4,783.91 = 1,215.63 : x
  2. Step 2: Convert to fraction form
    3,189.83/4,783.91 = 1,215.63/x
  3. Step 3: Cross multiply
    3,189.83x = 4,783.91 × 1,215.63
  4. Step 4: Simplify right side
    3,189.83x = 5,815,458.44
  5. Step 5: Solve for x
    x = 5,815,458.44/3,189.83
  6. Step 6: Final answer
    x = 1,823.13

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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.