Home / 3,111.12-4,670.32-1,813.52

Finding the Fourth Proportional to 3,111.12, 4,670.32 and 1,813.52

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Solution

The fourth proportional to 3,111.12, 4,670.32 and 1,813.52 is: 2,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.12 : 4,670.32 = 1,813.52 : x
  2. Step 2: Convert to fraction form
    3,111.12/4,670.32 = 1,813.52/x
  3. Step 3: Cross multiply
    3,111.12x = 4,670.32 × 1,813.52
  4. Step 4: Simplify right side
    3,111.12x = 8,469,718.73
  5. Step 5: Solve for x
    x = 8,469,718.73/3,111.12
  6. Step 6: Final answer
    x = 2,722.40

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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.