Home / 2,418.56-3,336-1,720.32

Finding the Fourth Proportional to 2,418.56, 3,336 and 1,720.32

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Solution

The fourth proportional to 2,418.56, 3,336 and 1,720.32 is: 2,372.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.56 : 3,336 = 1,720.32 : x
  2. Step 2: Convert to fraction form
    2,418.56/3,336 = 1,720.32/x
  3. Step 3: Cross multiply
    2,418.56x = 3,336 × 1,720.32
  4. Step 4: Simplify right side
    2,418.56x = 5,738,987.52
  5. Step 5: Solve for x
    x = 5,738,987.52/2,418.56
  6. Step 6: Final answer
    x = 2,372.89

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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.