Home / 3,126.36-4,315.77-2,185.29

Finding the Fourth Proportional to 3,126.36, 4,315.77 and 2,185.29

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Solution

The fourth proportional to 3,126.36, 4,315.77 and 2,185.29 is: 3,016.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.36 : 4,315.77 = 2,185.29 : x
  2. Step 2: Convert to fraction form
    3,126.36/4,315.77 = 2,185.29/x
  3. Step 3: Cross multiply
    3,126.36x = 4,315.77 × 2,185.29
  4. Step 4: Simplify right side
    3,126.36x = 9,431,209.02
  5. Step 5: Solve for x
    x = 9,431,209.02/3,126.36
  6. Step 6: Final answer
    x = 3,016.67

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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.