Home / 2,538.20-3,806.40-894.80

Finding the Fourth Proportional to 2,538.20, 3,806.40 and 894.80

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Solution

The fourth proportional to 2,538.20, 3,806.40 and 894.80 is: 1,341.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.20 : 3,806.40 = 894.80 : x
  2. Step 2: Convert to fraction form
    2,538.20/3,806.40 = 894.80/x
  3. Step 3: Cross multiply
    2,538.20x = 3,806.40 × 894.80
  4. Step 4: Simplify right side
    2,538.20x = 3,405,966.72
  5. Step 5: Solve for x
    x = 3,405,966.72/2,538.20
  6. Step 6: Final answer
    x = 1,341.88

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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.