Home / 5,418.96-8,129.52-1,720.56

Finding the Fourth Proportional to 5,418.96, 8,129.52 and 1,720.56

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Solution

The fourth proportional to 5,418.96, 8,129.52 and 1,720.56 is: 2,581.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.96 : 8,129.52 = 1,720.56 : x
  2. Step 2: Convert to fraction form
    5,418.96/8,129.52 = 1,720.56/x
  3. Step 3: Cross multiply
    5,418.96x = 8,129.52 × 1,720.56
  4. Step 4: Simplify right side
    5,418.96x = 13,987,326.93
  5. Step 5: Solve for x
    x = 13,987,326.93/5,418.96
  6. Step 6: Final answer
    x = 2,581.18

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1.5x scale

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.