Home / 3,738.18-5,158.80-2,145.12

Finding the Fourth Proportional to 3,738.18, 5,158.80 and 2,145.12

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Solution

The fourth proportional to 3,738.18, 5,158.80 and 2,145.12 is: 2,960.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.18 : 5,158.80 = 2,145.12 : x
  2. Step 2: Convert to fraction form
    3,738.18/5,158.80 = 2,145.12/x
  3. Step 3: Cross multiply
    3,738.18x = 5,158.80 × 2,145.12
  4. Step 4: Simplify right side
    3,738.18x = 11,066,232.35
  5. Step 5: Solve for x
    x = 11,066,232.35/3,738.18
  6. Step 6: Final answer
    x = 2,960.33

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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.