Home / 3,670.78-5,064.91-2,178.49

Finding the Fourth Proportional to 3,670.78, 5,064.91 and 2,178.49

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Solution

The fourth proportional to 3,670.78, 5,064.91 and 2,178.49 is: 3,005.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.78 : 5,064.91 = 2,178.49 : x
  2. Step 2: Convert to fraction form
    3,670.78/5,064.91 = 2,178.49/x
  3. Step 3: Cross multiply
    3,670.78x = 5,064.91 × 2,178.49
  4. Step 4: Simplify right side
    3,670.78x = 11,033,855.79
  5. Step 5: Solve for x
    x = 11,033,855.79/3,670.78
  6. Step 6: Final answer
    x = 3,005.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.