Home / 7,921.81-11,878.62-3,477.66

Finding the Fourth Proportional to 7,921.81, 11,878.62 and 3,477.66

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Solution

The fourth proportional to 7,921.81, 11,878.62 and 3,477.66 is: 5,214.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.81 : 11,878.62 = 3,477.66 : x
  2. Step 2: Convert to fraction form
    7,921.81/11,878.62 = 3,477.66/x
  3. Step 3: Cross multiply
    7,921.81x = 11,878.62 × 3,477.66
  4. Step 4: Simplify right side
    7,921.81x = 41,309,801.63
  5. Step 5: Solve for x
    x = 41,309,801.63/7,921.81
  6. Step 6: Final answer
    x = 5,214.69

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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.