Home / 7,886.79-11,828.48-3,205.60

Finding the Fourth Proportional to 7,886.79, 11,828.48 and 3,205.60

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Solution

The fourth proportional to 7,886.79, 11,828.48 and 3,205.60 is: 4,807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.79 : 11,828.48 = 3,205.60 : x
  2. Step 2: Convert to fraction form
    7,886.79/11,828.48 = 3,205.60/x
  3. Step 3: Cross multiply
    7,886.79x = 11,828.48 × 3,205.60
  4. Step 4: Simplify right side
    7,886.79x = 37,917,375.49
  5. Step 5: Solve for x
    x = 37,917,375.49/7,886.79
  6. Step 6: Final answer
    x = 4,807.71

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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.