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Finding the Fourth Proportional to 2,309.81, 3,464.71 and 1,078.08

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Solution

The fourth proportional to 2,309.81, 3,464.71 and 1,078.08 is: 1,617.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.81 : 3,464.71 = 1,078.08 : x
  2. Step 2: Convert to fraction form
    2,309.81/3,464.71 = 1,078.08/x
  3. Step 3: Cross multiply
    2,309.81x = 3,464.71 × 1,078.08
  4. Step 4: Simplify right side
    2,309.81x = 3,735,217.23
  5. Step 5: Solve for x
    x = 3,735,217.23/2,309.81
  6. Step 6: Final answer
    x = 1,617.11

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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.