Home / 2,806.72-4,218.28-2,603.07

Finding the Fourth Proportional to 2,806.72, 4,218.28 and 2,603.07

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Solution

The fourth proportional to 2,806.72, 4,218.28 and 2,603.07 is: 3,912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.72 : 4,218.28 = 2,603.07 : x
  2. Step 2: Convert to fraction form
    2,806.72/4,218.28 = 2,603.07/x
  3. Step 3: Cross multiply
    2,806.72x = 4,218.28 × 2,603.07
  4. Step 4: Simplify right side
    2,806.72x = 10,980,471.61
  5. Step 5: Solve for x
    x = 10,980,471.61/2,806.72
  6. Step 6: Final answer
    x = 3,912.21

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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.