Home / 3,909.40-5,395.06-2,141.08

Finding the Fourth Proportional to 3,909.40, 5,395.06 and 2,141.08

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Solution

The fourth proportional to 3,909.40, 5,395.06 and 2,141.08 is: 2,954.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.40 : 5,395.06 = 2,141.08 : x
  2. Step 2: Convert to fraction form
    3,909.40/5,395.06 = 2,141.08/x
  3. Step 3: Cross multiply
    3,909.40x = 5,395.06 × 2,141.08
  4. Step 4: Simplify right side
    3,909.40x = 11,551,255.06
  5. Step 5: Solve for x
    x = 11,551,255.06/3,909.40
  6. Step 6: Final answer
    x = 2,954.74

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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.