Home / 2,478.03-3,721.67-2,181.65

Finding the Fourth Proportional to 2,478.03, 3,721.67 and 2,181.65

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Solution

The fourth proportional to 2,478.03, 3,721.67 and 2,181.65 is: 3,276.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.03 : 3,721.67 = 2,181.65 : x
  2. Step 2: Convert to fraction form
    2,478.03/3,721.67 = 2,181.65/x
  3. Step 3: Cross multiply
    2,478.03x = 3,721.67 × 2,181.65
  4. Step 4: Simplify right side
    2,478.03x = 8,119,362.75
  5. Step 5: Solve for x
    x = 8,119,362.75/2,478.03
  6. Step 6: Final answer
    x = 3,276.54

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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.