Home / 7,828.70-11,742.73-3,147.30

Finding the Fourth Proportional to 7,828.70, 11,742.73 and 3,147.30

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Solution

The fourth proportional to 7,828.70, 11,742.73 and 3,147.30 is: 4,720.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.70 : 11,742.73 = 3,147.30 : x
  2. Step 2: Convert to fraction form
    7,828.70/11,742.73 = 3,147.30/x
  3. Step 3: Cross multiply
    7,828.70x = 11,742.73 × 3,147.30
  4. Step 4: Simplify right side
    7,828.70x = 36,957,886.26
  5. Step 5: Solve for x
    x = 36,957,886.26/7,828.70
  6. Step 6: Final answer
    x = 4,720.82

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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.