Home / 3,723.80-5,138.76-2,152.16

Finding the Fourth Proportional to 3,723.80, 5,138.76 and 2,152.16

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Solution

The fourth proportional to 3,723.80, 5,138.76 and 2,152.16 is: 2,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.80 : 5,138.76 = 2,152.16 : x
  2. Step 2: Convert to fraction form
    3,723.80/5,138.76 = 2,152.16/x
  3. Step 3: Cross multiply
    3,723.80x = 5,138.76 × 2,152.16
  4. Step 4: Simplify right side
    3,723.80x = 11,059,433.72
  5. Step 5: Solve for x
    x = 11,059,433.72/3,723.80
  6. Step 6: Final answer
    x = 2,969.93

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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.