Home / 8,126.54-11,203.47-5,140.88

Finding the Fourth Proportional to 8,126.54, 11,203.47 and 5,140.88

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Solution

The fourth proportional to 8,126.54, 11,203.47 and 5,140.88 is: 7,087.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.54 : 11,203.47 = 5,140.88 : x
  2. Step 2: Convert to fraction form
    8,126.54/11,203.47 = 5,140.88/x
  3. Step 3: Cross multiply
    8,126.54x = 11,203.47 × 5,140.88
  4. Step 4: Simplify right side
    8,126.54x = 57,595,694.85
  5. Step 5: Solve for x
    x = 57,595,694.85/8,126.54
  6. Step 6: Final answer
    x = 7,087.36

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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.