Home / 8,128.68-11,218.14-4,943.22

Finding the Fourth Proportional to 8,128.68, 11,218.14 and 4,943.22

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Solution

The fourth proportional to 8,128.68, 11,218.14 and 4,943.22 is: 6,821.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.68 : 11,218.14 = 4,943.22 : x
  2. Step 2: Convert to fraction form
    8,128.68/11,218.14 = 4,943.22/x
  3. Step 3: Cross multiply
    8,128.68x = 11,218.14 × 4,943.22
  4. Step 4: Simplify right side
    8,128.68x = 55,453,734.01
  5. Step 5: Solve for x
    x = 55,453,734.01/8,128.68
  6. Step 6: Final answer
    x = 6,821.99

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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.