Home / 3,811.11-5,256.43-3,280.87

Finding the Fourth Proportional to 3,811.11, 5,256.43 and 3,280.87

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Solution

The fourth proportional to 3,811.11, 5,256.43 and 3,280.87 is: 4,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.11 : 5,256.43 = 3,280.87 : x
  2. Step 2: Convert to fraction form
    3,811.11/5,256.43 = 3,280.87/x
  3. Step 3: Cross multiply
    3,811.11x = 5,256.43 × 3,280.87
  4. Step 4: Simplify right side
    3,811.11x = 17,245,663.49
  5. Step 5: Solve for x
    x = 17,245,663.49/3,811.11
  6. Step 6: Final answer
    x = 4,525.10

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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.