Home / 3,778.38-5,215.59-2,206.50

Finding the Fourth Proportional to 3,778.38, 5,215.59 and 2,206.50

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Solution

The fourth proportional to 3,778.38, 5,215.59 and 2,206.50 is: 3,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.38 : 5,215.59 = 2,206.50 : x
  2. Step 2: Convert to fraction form
    3,778.38/5,215.59 = 2,206.50/x
  3. Step 3: Cross multiply
    3,778.38x = 5,215.59 × 2,206.50
  4. Step 4: Simplify right side
    3,778.38x = 11,508,199.34
  5. Step 5: Solve for x
    x = 11,508,199.34/3,778.38
  6. Step 6: Final answer
    x = 3,045.80

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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.