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Finding the Fourth Proportional to 3,947.62, 5,921.64 and 3,750.76

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Solution

The fourth proportional to 3,947.62, 5,921.64 and 3,750.76 is: 5,626.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.62 : 5,921.64 = 3,750.76 : x
  2. Step 2: Convert to fraction form
    3,947.62/5,921.64 = 3,750.76/x
  3. Step 3: Cross multiply
    3,947.62x = 5,921.64 × 3,750.76
  4. Step 4: Simplify right side
    3,947.62x = 22,210,650.45
  5. Step 5: Solve for x
    x = 22,210,650.45/3,947.62
  6. Step 6: Final answer
    x = 5,626.34

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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.