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Finding the Fourth Proportional to 2,880, 3,974.49 and 1,702.08

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Solution

The fourth proportional to 2,880, 3,974.49 and 1,702.08 is: 2,348.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880 : 3,974.49 = 1,702.08 : x
  2. Step 2: Convert to fraction form
    2,880/3,974.49 = 1,702.08/x
  3. Step 3: Cross multiply
    2,880x = 3,974.49 × 1,702.08
  4. Step 4: Simplify right side
    2,880x = 6,764,899.94
  5. Step 5: Solve for x
    x = 6,764,899.94/2,880
  6. Step 6: Final answer
    x = 2,348.92

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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.