Home / 5,418.87-8,127.47-1,720.62

Finding the Fourth Proportional to 5,418.87, 8,127.47 and 1,720.62

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Solution

The fourth proportional to 5,418.87, 8,127.47 and 1,720.62 is: 2,580.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.87 : 8,127.47 = 1,720.62 : x
  2. Step 2: Convert to fraction form
    5,418.87/8,127.47 = 1,720.62/x
  3. Step 3: Cross multiply
    5,418.87x = 8,127.47 × 1,720.62
  4. Step 4: Simplify right side
    5,418.87x = 13,984,287.43
  5. Step 5: Solve for x
    x = 13,984,287.43/5,418.87
  6. Step 6: Final answer
    x = 2,580.66

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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.