Home / 5,211.39-7,817.79-1,926.81

Finding the Fourth Proportional to 5,211.39, 7,817.79 and 1,926.81

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Solution

The fourth proportional to 5,211.39, 7,817.79 and 1,926.81 is: 2,890.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.39 : 7,817.79 = 1,926.81 : x
  2. Step 2: Convert to fraction form
    5,211.39/7,817.79 = 1,926.81/x
  3. Step 3: Cross multiply
    5,211.39x = 7,817.79 × 1,926.81
  4. Step 4: Simplify right side
    5,211.39x = 15,063,395.95
  5. Step 5: Solve for x
    x = 15,063,395.95/5,211.39
  6. Step 6: Final answer
    x = 2,890.48

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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.