Home / 8,191.26-12,278.25-3,513.51

Finding the Fourth Proportional to 8,191.26, 12,278.25 and 3,513.51

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Solution

The fourth proportional to 8,191.26, 12,278.25 and 3,513.51 is: 5,266.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.26 : 12,278.25 = 3,513.51 : x
  2. Step 2: Convert to fraction form
    8,191.26/12,278.25 = 3,513.51/x
  3. Step 3: Cross multiply
    8,191.26x = 12,278.25 × 3,513.51
  4. Step 4: Simplify right side
    8,191.26x = 43,139,754.16
  5. Step 5: Solve for x
    x = 43,139,754.16/8,191.26
  6. Step 6: Final answer
    x = 5,266.56

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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.