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Finding the Fourth Proportional to 3,775.96, 5,662.86 and 1,309.48

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Solution

The fourth proportional to 3,775.96, 5,662.86 and 1,309.48 is: 1,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,775.96 : 5,662.86 = 1,309.48 : x
  2. Step 2: Convert to fraction form
    3,775.96/5,662.86 = 1,309.48/x
  3. Step 3: Cross multiply
    3,775.96x = 5,662.86 × 1,309.48
  4. Step 4: Simplify right side
    3,775.96x = 7,415,401.91
  5. Step 5: Solve for x
    x = 7,415,401.91/3,775.96
  6. Step 6: Final answer
    x = 1,963.85

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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.