Home / 3,912.71-5,402.09-2,422.81

Finding the Fourth Proportional to 3,912.71, 5,402.09 and 2,422.81

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Solution

The fourth proportional to 3,912.71, 5,402.09 and 2,422.81 is: 3,345.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.71 : 5,402.09 = 2,422.81 : x
  2. Step 2: Convert to fraction form
    3,912.71/5,402.09 = 2,422.81/x
  3. Step 3: Cross multiply
    3,912.71x = 5,402.09 × 2,422.81
  4. Step 4: Simplify right side
    3,912.71x = 13,088,250.48
  5. Step 5: Solve for x
    x = 13,088,250.48/3,912.71
  6. Step 6: Final answer
    x = 3,345.06

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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.