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Finding the Fourth Proportional to 3,494.70, 5,242.82 and 1,155.42

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Solution

The fourth proportional to 3,494.70, 5,242.82 and 1,155.42 is: 1,733.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,494.70 : 5,242.82 = 1,155.42 : x
  2. Step 2: Convert to fraction form
    3,494.70/5,242.82 = 1,155.42/x
  3. Step 3: Cross multiply
    3,494.70x = 5,242.82 × 1,155.42
  4. Step 4: Simplify right side
    3,494.70x = 6,057,659.08
  5. Step 5: Solve for x
    x = 6,057,659.08/3,494.70
  6. Step 6: Final answer
    x = 1,733.38

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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.