Home / 5,211.70-7,817.96-1,513.98

Finding the Fourth Proportional to 5,211.70, 7,817.96 and 1,513.98

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Solution

The fourth proportional to 5,211.70, 7,817.96 and 1,513.98 is: 2,271.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.70 : 7,817.96 = 1,513.98 : x
  2. Step 2: Convert to fraction form
    5,211.70/7,817.96 = 1,513.98/x
  3. Step 3: Cross multiply
    5,211.70x = 7,817.96 × 1,513.98
  4. Step 4: Simplify right side
    5,211.70x = 11,836,235.08
  5. Step 5: Solve for x
    x = 11,836,235.08/5,211.70
  6. Step 6: Final answer
    x = 2,271.09

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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.