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Finding the Fourth Proportional to 1,889.51, 2,832.19 and 1,276.49

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Solution

The fourth proportional to 1,889.51, 2,832.19 and 1,276.49 is: 1,913.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.51 : 2,832.19 = 1,276.49 : x
  2. Step 2: Convert to fraction form
    1,889.51/2,832.19 = 1,276.49/x
  3. Step 3: Cross multiply
    1,889.51x = 2,832.19 × 1,276.49
  4. Step 4: Simplify right side
    1,889.51x = 3,615,266.10
  5. Step 5: Solve for x
    x = 3,615,266.10/1,889.51
  6. Step 6: Final answer
    x = 1,913.34

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.