Home / 2,815.88-4,223.84-1,515.56

Finding the Fourth Proportional to 2,815.88, 4,223.84 and 1,515.56

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Solution

The fourth proportional to 2,815.88, 4,223.84 and 1,515.56 is: 2,273.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.88 : 4,223.84 = 1,515.56 : x
  2. Step 2: Convert to fraction form
    2,815.88/4,223.84 = 1,515.56/x
  3. Step 3: Cross multiply
    2,815.88x = 4,223.84 × 1,515.56
  4. Step 4: Simplify right side
    2,815.88x = 6,401,482.95
  5. Step 5: Solve for x
    x = 6,401,482.95/2,815.88
  6. Step 6: Final answer
    x = 2,273.35

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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.