Home / 3,778.20-5,668.28-1,438.25

Finding the Fourth Proportional to 3,778.20, 5,668.28 and 1,438.25

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Solution

The fourth proportional to 3,778.20, 5,668.28 and 1,438.25 is: 2,157.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.20 : 5,668.28 = 1,438.25 : x
  2. Step 2: Convert to fraction form
    3,778.20/5,668.28 = 1,438.25/x
  3. Step 3: Cross multiply
    3,778.20x = 5,668.28 × 1,438.25
  4. Step 4: Simplify right side
    3,778.20x = 8,152,368.18
  5. Step 5: Solve for x
    x = 8,152,368.18/3,778.20
  6. Step 6: Final answer
    x = 2,157.74

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1.5x scale

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.