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Finding the Fourth Proportional to 2,579.45, 3,869.16 and 935.99

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Solution

The fourth proportional to 2,579.45, 3,869.16 and 935.99 is: 1,403.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.45 : 3,869.16 = 935.99 : x
  2. Step 2: Convert to fraction form
    2,579.45/3,869.16 = 935.99/x
  3. Step 3: Cross multiply
    2,579.45x = 3,869.16 × 935.99
  4. Step 4: Simplify right side
    2,579.45x = 3,621,475.72
  5. Step 5: Solve for x
    x = 3,621,475.72/2,579.45
  6. Step 6: Final answer
    x = 1,403.97

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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.