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Finding the Fourth Proportional to 2,838.92, 4,258.71 and 758.99

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Solution

The fourth proportional to 2,838.92, 4,258.71 and 758.99 is: 1,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.92 : 4,258.71 = 758.99 : x
  2. Step 2: Convert to fraction form
    2,838.92/4,258.71 = 758.99/x
  3. Step 3: Cross multiply
    2,838.92x = 4,258.71 × 758.99
  4. Step 4: Simplify right side
    2,838.92x = 3,232,297.01
  5. Step 5: Solve for x
    x = 3,232,297.01/2,838.92
  6. Step 6: Final answer
    x = 1,138.57

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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.