Home / 8,131.10-11,225.75-5,149.49

Finding the Fourth Proportional to 8,131.10, 11,225.75 and 5,149.49

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Solution

The fourth proportional to 8,131.10, 11,225.75 and 5,149.49 is: 7,109.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.10 : 11,225.75 = 5,149.49 : x
  2. Step 2: Convert to fraction form
    8,131.10/11,225.75 = 5,149.49/x
  3. Step 3: Cross multiply
    8,131.10x = 11,225.75 × 5,149.49
  4. Step 4: Simplify right side
    8,131.10x = 57,806,805.49
  5. Step 5: Solve for x
    x = 57,806,805.49/8,131.10
  6. Step 6: Final answer
    x = 7,109.35

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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.