Home / 2,125.28-3,187.98-1,200.68

Finding the Fourth Proportional to 2,125.28, 3,187.98 and 1,200.68

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Solution

The fourth proportional to 2,125.28, 3,187.98 and 1,200.68 is: 1,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.28 : 3,187.98 = 1,200.68 : x
  2. Step 2: Convert to fraction form
    2,125.28/3,187.98 = 1,200.68/x
  3. Step 3: Cross multiply
    2,125.28x = 3,187.98 × 1,200.68
  4. Step 4: Simplify right side
    2,125.28x = 3,827,743.83
  5. Step 5: Solve for x
    x = 3,827,743.83/2,125.28
  6. Step 6: Final answer
    x = 1,801.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.