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Finding the Fourth Proportional to 3,774.68, 5,661.92 and 1,309.34

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Solution

The fourth proportional to 3,774.68, 5,661.92 and 1,309.34 is: 1,963.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774.68 : 5,661.92 = 1,309.34 : x
  2. Step 2: Convert to fraction form
    3,774.68/5,661.92 = 1,309.34/x
  3. Step 3: Cross multiply
    3,774.68x = 5,661.92 × 1,309.34
  4. Step 4: Simplify right side
    3,774.68x = 7,413,378.33
  5. Step 5: Solve for x
    x = 7,413,378.33/3,774.68
  6. Step 6: Final answer
    x = 1,963.98

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1.5x scale

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.