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Finding the Fourth Proportional to 1,813.04, 2,717.64 and 874.28

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Solution

The fourth proportional to 1,813.04, 2,717.64 and 874.28 is: 1,310.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.04 : 2,717.64 = 874.28 : x
  2. Step 2: Convert to fraction form
    1,813.04/2,717.64 = 874.28/x
  3. Step 3: Cross multiply
    1,813.04x = 2,717.64 × 874.28
  4. Step 4: Simplify right side
    1,813.04x = 2,375,978.30
  5. Step 5: Solve for x
    x = 2,375,978.30/1,813.04
  6. Step 6: Final answer
    x = 1,310.49

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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.