Home / 3,778.28-5,666.75-1,438.53

Finding the Fourth Proportional to 3,778.28, 5,666.75 and 1,438.53

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Solution

The fourth proportional to 3,778.28, 5,666.75 and 1,438.53 is: 2,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.28 : 5,666.75 = 1,438.53 : x
  2. Step 2: Convert to fraction form
    3,778.28/5,666.75 = 1,438.53/x
  3. Step 3: Cross multiply
    3,778.28x = 5,666.75 × 1,438.53
  4. Step 4: Simplify right side
    3,778.28x = 8,151,782.68
  5. Step 5: Solve for x
    x = 8,151,782.68/3,778.28
  6. Step 6: Final answer
    x = 2,157.54

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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.