Home / 3,778.04-5,207.64-2,980.09

Finding the Fourth Proportional to 3,778.04, 5,207.64 and 2,980.09

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Solution

The fourth proportional to 3,778.04, 5,207.64 and 2,980.09 is: 4,107.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.04 : 5,207.64 = 2,980.09 : x
  2. Step 2: Convert to fraction form
    3,778.04/5,207.64 = 2,980.09/x
  3. Step 3: Cross multiply
    3,778.04x = 5,207.64 × 2,980.09
  4. Step 4: Simplify right side
    3,778.04x = 15,519,247.98
  5. Step 5: Solve for x
    x = 15,519,247.98/3,778.04
  6. Step 6: Final answer
    x = 4,107.75

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1.5x scale

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.