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Finding the Fourth Proportional to 3,903.87, 5,856.09 and 1,306.80

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Solution

The fourth proportional to 3,903.87, 5,856.09 and 1,306.80 is: 1,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.87 : 5,856.09 = 1,306.80 : x
  2. Step 2: Convert to fraction form
    3,903.87/5,856.09 = 1,306.80/x
  3. Step 3: Cross multiply
    3,903.87x = 5,856.09 × 1,306.80
  4. Step 4: Simplify right side
    3,903.87x = 7,652,738.41
  5. Step 5: Solve for x
    x = 7,652,738.41/3,903.87
  6. Step 6: Final answer
    x = 1,960.30

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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.