Home / 2,631.40-3,939.72-1,704.64

Finding the Fourth Proportional to 2,631.40, 3,939.72 and 1,704.64

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Solution

The fourth proportional to 2,631.40, 3,939.72 and 1,704.64 is: 2,552.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.40 : 3,939.72 = 1,704.64 : x
  2. Step 2: Convert to fraction form
    2,631.40/3,939.72 = 1,704.64/x
  3. Step 3: Cross multiply
    2,631.40x = 3,939.72 × 1,704.64
  4. Step 4: Simplify right side
    2,631.40x = 6,715,804.30
  5. Step 5: Solve for x
    x = 6,715,804.30/2,631.40
  6. Step 6: Final answer
    x = 2,552.18

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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.