Home / 7,954-11,929.36-4,620.16

Finding the Fourth Proportional to 7,954, 11,929.36 and 4,620.16

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Solution

The fourth proportional to 7,954, 11,929.36 and 4,620.16 is: 6,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954 : 11,929.36 = 4,620.16 : x
  2. Step 2: Convert to fraction form
    7,954/11,929.36 = 4,620.16/x
  3. Step 3: Cross multiply
    7,954x = 11,929.36 × 4,620.16
  4. Step 4: Simplify right side
    7,954x = 55,115,551.90
  5. Step 5: Solve for x
    x = 55,115,551.90/7,954
  6. Step 6: Final answer
    x = 6,929.29

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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.