Home / 5,209.81-7,814.49-1,511.96

Finding the Fourth Proportional to 5,209.81, 7,814.49 and 1,511.96

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Solution

The fourth proportional to 5,209.81, 7,814.49 and 1,511.96 is: 2,267.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.81 : 7,814.49 = 1,511.96 : x
  2. Step 2: Convert to fraction form
    5,209.81/7,814.49 = 1,511.96/x
  3. Step 3: Cross multiply
    5,209.81x = 7,814.49 × 1,511.96
  4. Step 4: Simplify right side
    5,209.81x = 11,815,196.30
  5. Step 5: Solve for x
    x = 11,815,196.30/5,209.81
  6. Step 6: Final answer
    x = 2,267.87

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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.