Home / 2,126.54-3,189.81-1,258.22

Finding the Fourth Proportional to 2,126.54, 3,189.81 and 1,258.22

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Solution

The fourth proportional to 2,126.54, 3,189.81 and 1,258.22 is: 1,887.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.54 : 3,189.81 = 1,258.22 : x
  2. Step 2: Convert to fraction form
    2,126.54/3,189.81 = 1,258.22/x
  3. Step 3: Cross multiply
    2,126.54x = 3,189.81 × 1,258.22
  4. Step 4: Simplify right side
    2,126.54x = 4,013,495.43
  5. Step 5: Solve for x
    x = 4,013,495.43/2,126.54
  6. Step 6: Final answer
    x = 1,887.33

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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.