Home / 2,605.16-3,905.70-1,305.96

Finding the Fourth Proportional to 2,605.16, 3,905.70 and 1,305.96

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Solution

The fourth proportional to 2,605.16, 3,905.70 and 1,305.96 is: 1,957.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.16 : 3,905.70 = 1,305.96 : x
  2. Step 2: Convert to fraction form
    2,605.16/3,905.70 = 1,305.96/x
  3. Step 3: Cross multiply
    2,605.16x = 3,905.70 × 1,305.96
  4. Step 4: Simplify right side
    2,605.16x = 5,100,687.97
  5. Step 5: Solve for x
    x = 5,100,687.97/2,605.16
  6. Step 6: Final answer
    x = 1,957.92

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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.