Home / 3,811.34-5,259.70-2,132.72

Finding the Fourth Proportional to 3,811.34, 5,259.70 and 2,132.72

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Solution

The fourth proportional to 3,811.34, 5,259.70 and 2,132.72 is: 2,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.34 : 5,259.70 = 2,132.72 : x
  2. Step 2: Convert to fraction form
    3,811.34/5,259.70 = 2,132.72/x
  3. Step 3: Cross multiply
    3,811.34x = 5,259.70 × 2,132.72
  4. Step 4: Simplify right side
    3,811.34x = 11,217,467.38
  5. Step 5: Solve for x
    x = 11,217,467.38/3,811.34
  6. Step 6: Final answer
    x = 2,943.18

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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.