Home / 3,756.27-5,180.28-3,128.88

Finding the Fourth Proportional to 3,756.27, 5,180.28 and 3,128.88

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Solution

The fourth proportional to 3,756.27, 5,180.28 and 3,128.88 is: 4,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,756.27 : 5,180.28 = 3,128.88 : x
  2. Step 2: Convert to fraction form
    3,756.27/5,180.28 = 3,128.88/x
  3. Step 3: Cross multiply
    3,756.27x = 5,180.28 × 3,128.88
  4. Step 4: Simplify right side
    3,756.27x = 16,208,474.49
  5. Step 5: Solve for x
    x = 16,208,474.49/3,756.27
  6. Step 6: Final answer
    x = 4,315.05

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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.