Home / 2,619.72-3,923.10-1,642.86

Finding the Fourth Proportional to 2,619.72, 3,923.10 and 1,642.86

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Solution

The fourth proportional to 2,619.72, 3,923.10 and 1,642.86 is: 2,460.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.72 : 3,923.10 = 1,642.86 : x
  2. Step 2: Convert to fraction form
    2,619.72/3,923.10 = 1,642.86/x
  3. Step 3: Cross multiply
    2,619.72x = 3,923.10 × 1,642.86
  4. Step 4: Simplify right side
    2,619.72x = 6,445,104.07
  5. Step 5: Solve for x
    x = 6,445,104.07/2,619.72
  6. Step 6: Final answer
    x = 2,460.23

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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.