Home / 2,910.87-4,369.32-1,815.99

Finding the Fourth Proportional to 2,910.87, 4,369.32 and 1,815.99

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Solution

The fourth proportional to 2,910.87, 4,369.32 and 1,815.99 is: 2,725.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.87 : 4,369.32 = 1,815.99 : x
  2. Step 2: Convert to fraction form
    2,910.87/4,369.32 = 1,815.99/x
  3. Step 3: Cross multiply
    2,910.87x = 4,369.32 × 1,815.99
  4. Step 4: Simplify right side
    2,910.87x = 7,934,641.43
  5. Step 5: Solve for x
    x = 7,934,641.43/2,910.87
  6. Step 6: Final answer
    x = 2,725.87

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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.