Home / 3,863.68-5,331.96-2,271.49

Finding the Fourth Proportional to 3,863.68, 5,331.96 and 2,271.49

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Solution

The fourth proportional to 3,863.68, 5,331.96 and 2,271.49 is: 3,134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.68 : 5,331.96 = 2,271.49 : x
  2. Step 2: Convert to fraction form
    3,863.68/5,331.96 = 2,271.49/x
  3. Step 3: Cross multiply
    3,863.68x = 5,331.96 × 2,271.49
  4. Step 4: Simplify right side
    3,863.68x = 12,111,467.16
  5. Step 5: Solve for x
    x = 12,111,467.16/3,863.68
  6. Step 6: Final answer
    x = 3,134.70

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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.