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Finding the Fourth Proportional to 2,793.96, 3,855.52 and 1,615.20

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Solution

The fourth proportional to 2,793.96, 3,855.52 and 1,615.20 is: 2,228.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,793.96 : 3,855.52 = 1,615.20 : x
  2. Step 2: Convert to fraction form
    2,793.96/3,855.52 = 1,615.20/x
  3. Step 3: Cross multiply
    2,793.96x = 3,855.52 × 1,615.20
  4. Step 4: Simplify right side
    2,793.96x = 6,227,435.90
  5. Step 5: Solve for x
    x = 6,227,435.90/2,793.96
  6. Step 6: Final answer
    x = 2,228.89

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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.