Home / 2,758.10-4,140.09-1,115.72

Finding the Fourth Proportional to 2,758.10, 4,140.09 and 1,115.72

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Solution

The fourth proportional to 2,758.10, 4,140.09 and 1,115.72 is: 1,674.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.10 : 4,140.09 = 1,115.72 : x
  2. Step 2: Convert to fraction form
    2,758.10/4,140.09 = 1,115.72/x
  3. Step 3: Cross multiply
    2,758.10x = 4,140.09 × 1,115.72
  4. Step 4: Simplify right side
    2,758.10x = 4,619,160.51
  5. Step 5: Solve for x
    x = 4,619,160.51/2,758.10
  6. Step 6: Final answer
    x = 1,674.76

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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.