Home / 7,108.78-10,664.73-2,178.79

Finding the Fourth Proportional to 7,108.78, 10,664.73 and 2,178.79

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Solution

The fourth proportional to 7,108.78, 10,664.73 and 2,178.79 is: 3,268.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.78 : 10,664.73 = 2,178.79 : x
  2. Step 2: Convert to fraction form
    7,108.78/10,664.73 = 2,178.79/x
  3. Step 3: Cross multiply
    7,108.78x = 10,664.73 × 2,178.79
  4. Step 4: Simplify right side
    7,108.78x = 23,236,207.08
  5. Step 5: Solve for x
    x = 23,236,207.08/7,108.78
  6. Step 6: Final answer
    x = 3,268.66

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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.