Home / 2,102.28-2,901.20-1,170.80

Finding the Fourth Proportional to 2,102.28, 2,901.20 and 1,170.80

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Solution

The fourth proportional to 2,102.28, 2,901.20 and 1,170.80 is: 1,615.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.28 : 2,901.20 = 1,170.80 : x
  2. Step 2: Convert to fraction form
    2,102.28/2,901.20 = 1,170.80/x
  3. Step 3: Cross multiply
    2,102.28x = 2,901.20 × 1,170.80
  4. Step 4: Simplify right side
    2,102.28x = 3,396,724.96
  5. Step 5: Solve for x
    x = 3,396,724.96/2,102.28
  6. Step 6: Final answer
    x = 1,615.73

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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.