Home / 7,865.19-11,799.08-3,185.51

Finding the Fourth Proportional to 7,865.19, 11,799.08 and 3,185.51

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Solution

The fourth proportional to 7,865.19, 11,799.08 and 3,185.51 is: 4,778.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.19 : 11,799.08 = 3,185.51 : x
  2. Step 2: Convert to fraction form
    7,865.19/11,799.08 = 3,185.51/x
  3. Step 3: Cross multiply
    7,865.19x = 11,799.08 × 3,185.51
  4. Step 4: Simplify right side
    7,865.19x = 37,586,012.41
  5. Step 5: Solve for x
    x = 37,586,012.41/7,865.19
  6. Step 6: Final answer
    x = 4,778.78

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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.