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Finding the Fourth Proportional to 1,785.78, 2,672.19 and 1,474.74

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Solution

The fourth proportional to 1,785.78, 2,672.19 and 1,474.74 is: 2,206.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.78 : 2,672.19 = 1,474.74 : x
  2. Step 2: Convert to fraction form
    1,785.78/2,672.19 = 1,474.74/x
  3. Step 3: Cross multiply
    1,785.78x = 2,672.19 × 1,474.74
  4. Step 4: Simplify right side
    1,785.78x = 3,940,785.48
  5. Step 5: Solve for x
    x = 3,940,785.48/1,785.78
  6. Step 6: Final answer
    x = 2,206.76

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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.