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Finding the Fourth Proportional to 1,896, 2,616.48 and 1,068.16

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Solution

The fourth proportional to 1,896, 2,616.48 and 1,068.16 is: 1,474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896 : 2,616.48 = 1,068.16 : x
  2. Step 2: Convert to fraction form
    1,896/2,616.48 = 1,068.16/x
  3. Step 3: Cross multiply
    1,896x = 2,616.48 × 1,068.16
  4. Step 4: Simplify right side
    1,896x = 2,794,819.28
  5. Step 5: Solve for x
    x = 2,794,819.28/1,896
  6. Step 6: Final answer
    x = 1,474.06

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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.