Home / 2,647.53-3,971.52-1,087.65

Finding the Fourth Proportional to 2,647.53, 3,971.52 and 1,087.65

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Solution

The fourth proportional to 2,647.53, 3,971.52 and 1,087.65 is: 1,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.53 : 3,971.52 = 1,087.65 : x
  2. Step 2: Convert to fraction form
    2,647.53/3,971.52 = 1,087.65/x
  3. Step 3: Cross multiply
    2,647.53x = 3,971.52 × 1,087.65
  4. Step 4: Simplify right side
    2,647.53x = 4,319,623.73
  5. Step 5: Solve for x
    x = 4,319,623.73/2,647.53
  6. Step 6: Final answer
    x = 1,631.57

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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.