Home / 4,122.42-5,689.80-3,790.32

Finding the Fourth Proportional to 4,122.42, 5,689.80 and 3,790.32

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Solution

The fourth proportional to 4,122.42, 5,689.80 and 3,790.32 is: 5,231.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122.42 : 5,689.80 = 3,790.32 : x
  2. Step 2: Convert to fraction form
    4,122.42/5,689.80 = 3,790.32/x
  3. Step 3: Cross multiply
    4,122.42x = 5,689.80 × 3,790.32
  4. Step 4: Simplify right side
    4,122.42x = 21,566,169.85
  5. Step 5: Solve for x
    x = 21,566,169.85/4,122.42
  6. Step 6: Final answer
    x = 5,231.43

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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.