Home / 2,815.57-4,224.30-1,585.38

Finding the Fourth Proportional to 2,815.57, 4,224.30 and 1,585.38

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Solution

The fourth proportional to 2,815.57, 4,224.30 and 1,585.38 is: 2,378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.57 : 4,224.30 = 1,585.38 : x
  2. Step 2: Convert to fraction form
    2,815.57/4,224.30 = 1,585.38/x
  3. Step 3: Cross multiply
    2,815.57x = 4,224.30 × 1,585.38
  4. Step 4: Simplify right side
    2,815.57x = 6,697,120.73
  5. Step 5: Solve for x
    x = 6,697,120.73/2,815.57
  6. Step 6: Final answer
    x = 2,378.60

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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.