Home / 5,415.56-8,126.52-2,129

Finding the Fourth Proportional to 5,415.56, 8,126.52 and 2,129

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Solution

The fourth proportional to 5,415.56, 8,126.52 and 2,129 is: 3,194.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.56 : 8,126.52 = 2,129 : x
  2. Step 2: Convert to fraction form
    5,415.56/8,126.52 = 2,129/x
  3. Step 3: Cross multiply
    5,415.56x = 8,126.52 × 2,129
  4. Step 4: Simplify right side
    5,415.56x = 17,301,361.08
  5. Step 5: Solve for x
    x = 17,301,361.08/5,415.56
  6. Step 6: Final answer
    x = 3,194.75

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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.