Home / 2,628.05-3,939.84-1,166.40

Finding the Fourth Proportional to 2,628.05, 3,939.84 and 1,166.40

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Solution

The fourth proportional to 2,628.05, 3,939.84 and 1,166.40 is: 1,748.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.05 : 3,939.84 = 1,166.40 : x
  2. Step 2: Convert to fraction form
    2,628.05/3,939.84 = 1,166.40/x
  3. Step 3: Cross multiply
    2,628.05x = 3,939.84 × 1,166.40
  4. Step 4: Simplify right side
    2,628.05x = 4,595,429.38
  5. Step 5: Solve for x
    x = 4,595,429.38/2,628.05
  6. Step 6: Final answer
    x = 1,748.61

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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.