Home / 5,418.51-8,129.57-3,663.43

Finding the Fourth Proportional to 5,418.51, 8,129.57 and 3,663.43

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Solution

The fourth proportional to 5,418.51, 8,129.57 and 3,663.43 is: 5,496.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.51 : 8,129.57 = 3,663.43 : x
  2. Step 2: Convert to fraction form
    5,418.51/8,129.57 = 3,663.43/x
  3. Step 3: Cross multiply
    5,418.51x = 8,129.57 × 3,663.43
  4. Step 4: Simplify right side
    5,418.51x = 29,782,110.63
  5. Step 5: Solve for x
    x = 29,782,110.63/5,418.51
  6. Step 6: Final answer
    x = 5,496.37

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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.