Home / 5,418.21-8,127.51-1,720.35

Finding the Fourth Proportional to 5,418.21, 8,127.51 and 1,720.35

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Solution

The fourth proportional to 5,418.21, 8,127.51 and 1,720.35 is: 2,580.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.21 : 8,127.51 = 1,720.35 : x
  2. Step 2: Convert to fraction form
    5,418.21/8,127.51 = 1,720.35/x
  3. Step 3: Cross multiply
    5,418.21x = 8,127.51 × 1,720.35
  4. Step 4: Simplify right side
    5,418.21x = 13,982,161.83
  5. Step 5: Solve for x
    x = 13,982,161.83/5,418.21
  6. Step 6: Final answer
    x = 2,580.59

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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.