Home / 2,815.70-4,224.74-1,515.65

Finding the Fourth Proportional to 2,815.70, 4,224.74 and 1,515.65

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Solution

The fourth proportional to 2,815.70, 4,224.74 and 1,515.65 is: 2,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.70 : 4,224.74 = 1,515.65 : x
  2. Step 2: Convert to fraction form
    2,815.70/4,224.74 = 1,515.65/x
  3. Step 3: Cross multiply
    2,815.70x = 4,224.74 × 1,515.65
  4. Step 4: Simplify right side
    2,815.70x = 6,403,198.48
  5. Step 5: Solve for x
    x = 6,403,198.48/2,815.70
  6. Step 6: Final answer
    x = 2,274.11

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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.