Home / 5,419.25-8,126.57-1,720.48

Finding the Fourth Proportional to 5,419.25, 8,126.57 and 1,720.48

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Solution

The fourth proportional to 5,419.25, 8,126.57 and 1,720.48 is: 2,579.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.25 : 8,126.57 = 1,720.48 : x
  2. Step 2: Convert to fraction form
    5,419.25/8,126.57 = 1,720.48/x
  3. Step 3: Cross multiply
    5,419.25x = 8,126.57 × 1,720.48
  4. Step 4: Simplify right side
    5,419.25x = 13,981,615.61
  5. Step 5: Solve for x
    x = 13,981,615.61/5,419.25
  6. Step 6: Final answer
    x = 2,579.99

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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.