Home / 9,111.78-13,669.60-2,873.56

Finding the Fourth Proportional to 9,111.78, 13,669.60 and 2,873.56

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Solution

The fourth proportional to 9,111.78, 13,669.60 and 2,873.56 is: 4,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.78 : 13,669.60 = 2,873.56 : x
  2. Step 2: Convert to fraction form
    9,111.78/13,669.60 = 2,873.56/x
  3. Step 3: Cross multiply
    9,111.78x = 13,669.60 × 2,873.56
  4. Step 4: Simplify right side
    9,111.78x = 39,280,415.78
  5. Step 5: Solve for x
    x = 39,280,415.78/9,111.78
  6. Step 6: Final answer
    x = 4,310.95

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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.