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Finding the Fourth Proportional to 2,793.47, 3,855.47 and 1,615.19

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Solution

The fourth proportional to 2,793.47, 3,855.47 and 1,615.19 is: 2,229.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,793.47 : 3,855.47 = 1,615.19 : x
  2. Step 2: Convert to fraction form
    2,793.47/3,855.47 = 1,615.19/x
  3. Step 3: Cross multiply
    2,793.47x = 3,855.47 × 1,615.19
  4. Step 4: Simplify right side
    2,793.47x = 6,227,289.24
  5. Step 5: Solve for x
    x = 6,227,289.24/2,793.47
  6. Step 6: Final answer
    x = 2,229.23

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Half scale
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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.