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Finding the Fourth Proportional to 3,774.81, 5,660.79 and 1,309.03

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Solution

The fourth proportional to 3,774.81, 5,660.79 and 1,309.03 is: 1,963.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774.81 : 5,660.79 = 1,309.03 : x
  2. Step 2: Convert to fraction form
    3,774.81/5,660.79 = 1,309.03/x
  3. Step 3: Cross multiply
    3,774.81x = 5,660.79 × 1,309.03
  4. Step 4: Simplify right side
    3,774.81x = 7,410,151.01
  5. Step 5: Solve for x
    x = 7,410,151.01/3,774.81
  6. Step 6: Final answer
    x = 1,963.05

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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.