Home / 3,135.28-4,327.14-1,808.72

Finding the Fourth Proportional to 3,135.28, 4,327.14 and 1,808.72

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Solution

The fourth proportional to 3,135.28, 4,327.14 and 1,808.72 is: 2,496.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.28 : 4,327.14 = 1,808.72 : x
  2. Step 2: Convert to fraction form
    3,135.28/4,327.14 = 1,808.72/x
  3. Step 3: Cross multiply
    3,135.28x = 4,327.14 × 1,808.72
  4. Step 4: Simplify right side
    3,135.28x = 7,826,584.66
  5. Step 5: Solve for x
    x = 7,826,584.66/3,135.28
  6. Step 6: Final answer
    x = 2,496.30

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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.