Home / 3,518.72-5,278-2,040.15

Finding the Fourth Proportional to 3,518.72, 5,278 and 2,040.15

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Solution

The fourth proportional to 3,518.72, 5,278 and 2,040.15 is: 3,060.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.72 : 5,278 = 2,040.15 : x
  2. Step 2: Convert to fraction form
    3,518.72/5,278 = 2,040.15/x
  3. Step 3: Cross multiply
    3,518.72x = 5,278 × 2,040.15
  4. Step 4: Simplify right side
    3,518.72x = 10,767,911.70
  5. Step 5: Solve for x
    x = 10,767,911.70/3,518.72
  6. Step 6: Final answer
    x = 3,060.18

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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.