Home / 3,977.30-5,488.70-2,405.09

Finding the Fourth Proportional to 3,977.30, 5,488.70 and 2,405.09

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Solution

The fourth proportional to 3,977.30, 5,488.70 and 2,405.09 is: 3,319.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.30 : 5,488.70 = 2,405.09 : x
  2. Step 2: Convert to fraction form
    3,977.30/5,488.70 = 2,405.09/x
  3. Step 3: Cross multiply
    3,977.30x = 5,488.70 × 2,405.09
  4. Step 4: Simplify right side
    3,977.30x = 13,200,778.01
  5. Step 5: Solve for x
    x = 13,200,778.01/3,977.30
  6. Step 6: Final answer
    x = 3,319.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.