Home / 2,126.56-2,935.23-1,380.48

Finding the Fourth Proportional to 2,126.56, 2,935.23 and 1,380.48

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Solution

The fourth proportional to 2,126.56, 2,935.23 and 1,380.48 is: 1,905.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.56 : 2,935.23 = 1,380.48 : x
  2. Step 2: Convert to fraction form
    2,126.56/2,935.23 = 1,380.48/x
  3. Step 3: Cross multiply
    2,126.56x = 2,935.23 × 1,380.48
  4. Step 4: Simplify right side
    2,126.56x = 4,052,026.31
  5. Step 5: Solve for x
    x = 4,052,026.31/2,126.56
  6. Step 6: Final answer
    x = 1,905.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.