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Finding the Fourth Proportional to 2,793.12, 3,854.40 and 1,551.12

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Solution

The fourth proportional to 2,793.12, 3,854.40 and 1,551.12 is: 2,140.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,793.12 : 3,854.40 = 1,551.12 : x
  2. Step 2: Convert to fraction form
    2,793.12/3,854.40 = 1,551.12/x
  3. Step 3: Cross multiply
    2,793.12x = 3,854.40 × 1,551.12
  4. Step 4: Simplify right side
    2,793.12x = 5,978,636.93
  5. Step 5: Solve for x
    x = 5,978,636.93/2,793.12
  6. Step 6: Final answer
    x = 2,140.49

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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.