Home / 6,291.42-9,438.46-2,131.22

Finding the Fourth Proportional to 6,291.42, 9,438.46 and 2,131.22

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Solution

The fourth proportional to 6,291.42, 9,438.46 and 2,131.22 is: 3,197.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.42 : 9,438.46 = 2,131.22 : x
  2. Step 2: Convert to fraction form
    6,291.42/9,438.46 = 2,131.22/x
  3. Step 3: Cross multiply
    6,291.42x = 9,438.46 × 2,131.22
  4. Step 4: Simplify right side
    6,291.42x = 20,115,434.72
  5. Step 5: Solve for x
    x = 20,115,434.72/6,291.42
  6. Step 6: Final answer
    x = 3,197.28

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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.