Home / 2,125.10-3,189.98-1,086.28

Finding the Fourth Proportional to 2,125.10, 3,189.98 and 1,086.28

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Solution

The fourth proportional to 2,125.10, 3,189.98 and 1,086.28 is: 1,630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.10 : 3,189.98 = 1,086.28 : x
  2. Step 2: Convert to fraction form
    2,125.10/3,189.98 = 1,086.28/x
  3. Step 3: Cross multiply
    2,125.10x = 3,189.98 × 1,086.28
  4. Step 4: Simplify right side
    2,125.10x = 3,465,206.22
  5. Step 5: Solve for x
    x = 3,465,206.22/2,125.10
  6. Step 6: Final answer
    x = 1,630.61

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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.