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Finding the Fourth Proportional to 1,878.41, 2,819.29 and 892.44

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Solution

The fourth proportional to 1,878.41, 2,819.29 and 892.44 is: 1,339.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.41 : 2,819.29 = 892.44 : x
  2. Step 2: Convert to fraction form
    1,878.41/2,819.29 = 892.44/x
  3. Step 3: Cross multiply
    1,878.41x = 2,819.29 × 892.44
  4. Step 4: Simplify right side
    1,878.41x = 2,516,047.17
  5. Step 5: Solve for x
    x = 2,516,047.17/1,878.41
  6. Step 6: Final answer
    x = 1,339.46

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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.