Home / 3,072.08-4,238.20-2,141.12

Finding the Fourth Proportional to 3,072.08, 4,238.20 and 2,141.12

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Solution

The fourth proportional to 3,072.08, 4,238.20 and 2,141.12 is: 2,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.08 : 4,238.20 = 2,141.12 : x
  2. Step 2: Convert to fraction form
    3,072.08/4,238.20 = 2,141.12/x
  3. Step 3: Cross multiply
    3,072.08x = 4,238.20 × 2,141.12
  4. Step 4: Simplify right side
    3,072.08x = 9,074,494.78
  5. Step 5: Solve for x
    x = 9,074,494.78/3,072.08
  6. Step 6: Final answer
    x = 2,953.86

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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.