Home / 2,589.21-3,878.45-1,352.88

Finding the Fourth Proportional to 2,589.21, 3,878.45 and 1,352.88

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Solution

The fourth proportional to 2,589.21, 3,878.45 and 1,352.88 is: 2,026.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.21 : 3,878.45 = 1,352.88 : x
  2. Step 2: Convert to fraction form
    2,589.21/3,878.45 = 1,352.88/x
  3. Step 3: Cross multiply
    2,589.21x = 3,878.45 × 1,352.88
  4. Step 4: Simplify right side
    2,589.21x = 5,247,075.74
  5. Step 5: Solve for x
    x = 5,247,075.74/2,589.21
  6. Step 6: Final answer
    x = 2,026.52

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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.