Home / 2,104.28-2,903.96-1,172.80

Finding the Fourth Proportional to 2,104.28, 2,903.96 and 1,172.80

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Solution

The fourth proportional to 2,104.28, 2,903.96 and 1,172.80 is: 1,618.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.28 : 2,903.96 = 1,172.80 : x
  2. Step 2: Convert to fraction form
    2,104.28/2,903.96 = 1,172.80/x
  3. Step 3: Cross multiply
    2,104.28x = 2,903.96 × 1,172.80
  4. Step 4: Simplify right side
    2,104.28x = 3,405,764.29
  5. Step 5: Solve for x
    x = 3,405,764.29/2,104.28
  6. Step 6: Final answer
    x = 1,618.49

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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.