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Finding the Fourth Proportional to 3,303.78, 4,559.67 and 2,859.90

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Solution

The fourth proportional to 3,303.78, 4,559.67 and 2,859.90 is: 3,947.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,303.78 : 4,559.67 = 2,859.90 : x
  2. Step 2: Convert to fraction form
    3,303.78/4,559.67 = 2,859.90/x
  3. Step 3: Cross multiply
    3,303.78x = 4,559.67 × 2,859.90
  4. Step 4: Simplify right side
    3,303.78x = 13,040,200.23
  5. Step 5: Solve for x
    x = 13,040,200.23/3,303.78
  6. Step 6: Final answer
    x = 3,947.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.