Home / 1,636.91-2,455.40-1,553.84

Finding the Fourth Proportional to 1,636.91, 2,455.40 and 1,553.84

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Solution

The fourth proportional to 1,636.91, 2,455.40 and 1,553.84 is: 2,330.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.91 : 2,455.40 = 1,553.84 : x
  2. Step 2: Convert to fraction form
    1,636.91/2,455.40 = 1,553.84/x
  3. Step 3: Cross multiply
    1,636.91x = 2,455.40 × 1,553.84
  4. Step 4: Simplify right side
    1,636.91x = 3,815,291.78
  5. Step 5: Solve for x
    x = 3,815,291.78/1,636.91
  6. Step 6: Final answer
    x = 2,330.78

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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.