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Finding the Fourth Proportional to 4,640.39, 6,961.80 and 1,718.99

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Solution

The fourth proportional to 4,640.39, 6,961.80 and 1,718.99 is: 2,578.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,640.39 : 6,961.80 = 1,718.99 : x
  2. Step 2: Convert to fraction form
    4,640.39/6,961.80 = 1,718.99/x
  3. Step 3: Cross multiply
    4,640.39x = 6,961.80 × 1,718.99
  4. Step 4: Simplify right side
    4,640.39x = 11,967,264.58
  5. Step 5: Solve for x
    x = 11,967,264.58/4,640.39
  6. Step 6: Final answer
    x = 2,578.94

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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.