Home / 2,126.40-3,190.28-1,351.23

Finding the Fourth Proportional to 2,126.40, 3,190.28 and 1,351.23

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Solution

The fourth proportional to 2,126.40, 3,190.28 and 1,351.23 is: 2,027.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.40 : 3,190.28 = 1,351.23 : x
  2. Step 2: Convert to fraction form
    2,126.40/3,190.28 = 1,351.23/x
  3. Step 3: Cross multiply
    2,126.40x = 3,190.28 × 1,351.23
  4. Step 4: Simplify right side
    2,126.40x = 4,310,795.29
  5. Step 5: Solve for x
    x = 4,310,795.29/2,126.40
  6. Step 6: Final answer
    x = 2,027.27

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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.