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Finding the Fourth Proportional to 1,893.76, 2,840.18 and 1,275.02

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Solution

The fourth proportional to 1,893.76, 2,840.18 and 1,275.02 is: 1,912.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.76 : 2,840.18 = 1,275.02 : x
  2. Step 2: Convert to fraction form
    1,893.76/2,840.18 = 1,275.02/x
  3. Step 3: Cross multiply
    1,893.76x = 2,840.18 × 1,275.02
  4. Step 4: Simplify right side
    1,893.76x = 3,621,286.30
  5. Step 5: Solve for x
    x = 3,621,286.30/1,893.76
  6. Step 6: Final answer
    x = 1,912.22

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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.