Home / 2,163.52-2,985.44-1,279.28

Finding the Fourth Proportional to 2,163.52, 2,985.44 and 1,279.28

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Solution

The fourth proportional to 2,163.52, 2,985.44 and 1,279.28 is: 1,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.52 : 2,985.44 = 1,279.28 : x
  2. Step 2: Convert to fraction form
    2,163.52/2,985.44 = 1,279.28/x
  3. Step 3: Cross multiply
    2,163.52x = 2,985.44 × 1,279.28
  4. Step 4: Simplify right side
    2,163.52x = 3,819,213.68
  5. Step 5: Solve for x
    x = 3,819,213.68/2,163.52
  6. Step 6: Final answer
    x = 1,765.28

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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.