Home / 7,828.14-11,739.29-3,146.57

Finding the Fourth Proportional to 7,828.14, 11,739.29 and 3,146.57

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Solution

The fourth proportional to 7,828.14, 11,739.29 and 3,146.57 is: 4,718.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.14 : 11,739.29 = 3,146.57 : x
  2. Step 2: Convert to fraction form
    7,828.14/11,739.29 = 3,146.57/x
  3. Step 3: Cross multiply
    7,828.14x = 11,739.29 × 3,146.57
  4. Step 4: Simplify right side
    7,828.14x = 36,938,476.25
  5. Step 5: Solve for x
    x = 36,938,476.25/7,828.14
  6. Step 6: Final answer
    x = 4,718.68

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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.