Home / 2,589.08-3,881.61-1,272.42

Finding the Fourth Proportional to 2,589.08, 3,881.61 and 1,272.42

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Solution

The fourth proportional to 2,589.08, 3,881.61 and 1,272.42 is: 1,907.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.08 : 3,881.61 = 1,272.42 : x
  2. Step 2: Convert to fraction form
    2,589.08/3,881.61 = 1,272.42/x
  3. Step 3: Cross multiply
    2,589.08x = 3,881.61 × 1,272.42
  4. Step 4: Simplify right side
    2,589.08x = 4,939,038.20
  5. Step 5: Solve for x
    x = 4,939,038.20/2,589.08
  6. Step 6: Final answer
    x = 1,907.65

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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.