Home / 3,890.88-5,832.72-1,425.12

Finding the Fourth Proportional to 3,890.88, 5,832.72 and 1,425.12

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Solution

The fourth proportional to 3,890.88, 5,832.72 and 1,425.12 is: 2,136.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.88 : 5,832.72 = 1,425.12 : x
  2. Step 2: Convert to fraction form
    3,890.88/5,832.72 = 1,425.12/x
  3. Step 3: Cross multiply
    3,890.88x = 5,832.72 × 1,425.12
  4. Step 4: Simplify right side
    3,890.88x = 8,312,325.93
  5. Step 5: Solve for x
    x = 8,312,325.93/3,890.88
  6. Step 6: Final answer
    x = 2,136.36

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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.