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Finding the Fourth Proportional to 3,260.76, 4,499.50 and 1,863.48

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Solution

The fourth proportional to 3,260.76, 4,499.50 and 1,863.48 is: 2,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260.76 : 4,499.50 = 1,863.48 : x
  2. Step 2: Convert to fraction form
    3,260.76/4,499.50 = 1,863.48/x
  3. Step 3: Cross multiply
    3,260.76x = 4,499.50 × 1,863.48
  4. Step 4: Simplify right side
    3,260.76x = 8,384,728.26
  5. Step 5: Solve for x
    x = 8,384,728.26/3,260.76
  6. Step 6: Final answer
    x = 2,571.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.