Home / 12,774.66-19,164.88-3,890.79

Finding the Fourth Proportional to 12,774.66, 19,164.88 and 3,890.79

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Solution

The fourth proportional to 12,774.66, 19,164.88 and 3,890.79 is: 5,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774.66 : 19,164.88 = 3,890.79 : x
  2. Step 2: Convert to fraction form
    12,774.66/19,164.88 = 3,890.79/x
  3. Step 3: Cross multiply
    12,774.66x = 19,164.88 × 3,890.79
  4. Step 4: Simplify right side
    12,774.66x = 74,566,523.46
  5. Step 5: Solve for x
    x = 74,566,523.46/12,774.66
  6. Step 6: Final answer
    x = 5,837.07

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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.