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Finding the Fourth Proportional to 1,899.75, 2,615.84 and 1,662.35

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Solution

The fourth proportional to 1,899.75, 2,615.84 and 1,662.35 is: 2,288.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.75 : 2,615.84 = 1,662.35 : x
  2. Step 2: Convert to fraction form
    1,899.75/2,615.84 = 1,662.35/x
  3. Step 3: Cross multiply
    1,899.75x = 2,615.84 × 1,662.35
  4. Step 4: Simplify right side
    1,899.75x = 4,348,443.17
  5. Step 5: Solve for x
    x = 4,348,443.17/1,899.75
  6. Step 6: Final answer
    x = 2,288.95

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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.