Home / 3,135.20-4,323.04-1,999.36

Finding the Fourth Proportional to 3,135.20, 4,323.04 and 1,999.36

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Solution

The fourth proportional to 3,135.20, 4,323.04 and 1,999.36 is: 2,756.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.20 : 4,323.04 = 1,999.36 : x
  2. Step 2: Convert to fraction form
    3,135.20/4,323.04 = 1,999.36/x
  3. Step 3: Cross multiply
    3,135.20x = 4,323.04 × 1,999.36
  4. Step 4: Simplify right side
    3,135.20x = 8,643,313.25
  5. Step 5: Solve for x
    x = 8,643,313.25/3,135.20
  6. Step 6: Final answer
    x = 2,756.86

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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.