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Finding the Fourth Proportional to 2,605.06, 3,908.86 and 2,391.22

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Solution

The fourth proportional to 2,605.06, 3,908.86 and 2,391.22 is: 3,588.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.06 : 3,908.86 = 2,391.22 : x
  2. Step 2: Convert to fraction form
    2,605.06/3,908.86 = 2,391.22/x
  3. Step 3: Cross multiply
    2,605.06x = 3,908.86 × 2,391.22
  4. Step 4: Simplify right side
    2,605.06x = 9,346,944.21
  5. Step 5: Solve for x
    x = 9,346,944.21/2,605.06
  6. Step 6: Final answer
    x = 3,588.00

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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.