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Finding the Fourth Proportional to 2,874.78, 4,305.38 and 1,886.99

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Solution

The fourth proportional to 2,874.78, 4,305.38 and 1,886.99 is: 2,826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.78 : 4,305.38 = 1,886.99 : x
  2. Step 2: Convert to fraction form
    2,874.78/4,305.38 = 1,886.99/x
  3. Step 3: Cross multiply
    2,874.78x = 4,305.38 × 1,886.99
  4. Step 4: Simplify right side
    2,874.78x = 8,124,178.04
  5. Step 5: Solve for x
    x = 8,124,178.04/2,874.78
  6. Step 6: Final answer
    x = 2,826.02

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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.