Home / 5,418.56-8,127.84-1,314.56

Finding the Fourth Proportional to 5,418.56, 8,127.84 and 1,314.56

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Solution

The fourth proportional to 5,418.56, 8,127.84 and 1,314.56 is: 1,971.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.56 : 8,127.84 = 1,314.56 : x
  2. Step 2: Convert to fraction form
    5,418.56/8,127.84 = 1,314.56/x
  3. Step 3: Cross multiply
    5,418.56x = 8,127.84 × 1,314.56
  4. Step 4: Simplify right side
    5,418.56x = 10,684,558.60
  5. Step 5: Solve for x
    x = 10,684,558.60/5,418.56
  6. Step 6: Final answer
    x = 1,971.84

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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.