Home / 5,209.70-7,815.32-1,511.96

Finding the Fourth Proportional to 5,209.70, 7,815.32 and 1,511.96

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Solution

The fourth proportional to 5,209.70, 7,815.32 and 1,511.96 is: 2,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.70 : 7,815.32 = 1,511.96 : x
  2. Step 2: Convert to fraction form
    5,209.70/7,815.32 = 1,511.96/x
  3. Step 3: Cross multiply
    5,209.70x = 7,815.32 × 1,511.96
  4. Step 4: Simplify right side
    5,209.70x = 11,816,404.59
  5. Step 5: Solve for x
    x = 11,816,404.59/5,209.70
  6. Step 6: Final answer
    x = 2,268.16

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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.