Home / 2,126.31-3,188.07-1,086.81

Finding the Fourth Proportional to 2,126.31, 3,188.07 and 1,086.81

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Solution

The fourth proportional to 2,126.31, 3,188.07 and 1,086.81 is: 1,629.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.31 : 3,188.07 = 1,086.81 : x
  2. Step 2: Convert to fraction form
    2,126.31/3,188.07 = 1,086.81/x
  3. Step 3: Cross multiply
    2,126.31x = 3,188.07 × 1,086.81
  4. Step 4: Simplify right side
    2,126.31x = 3,464,826.36
  5. Step 5: Solve for x
    x = 3,464,826.36/2,126.31
  6. Step 6: Final answer
    x = 1,629.50

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Half scale
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Double scale
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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.