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Finding the Fourth Proportional to 3,393.70, 4,691.93 and 3,246.68

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Solution

The fourth proportional to 3,393.70, 4,691.93 and 3,246.68 is: 4,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.70 : 4,691.93 = 3,246.68 : x
  2. Step 2: Convert to fraction form
    3,393.70/4,691.93 = 3,246.68/x
  3. Step 3: Cross multiply
    3,393.70x = 4,691.93 × 3,246.68
  4. Step 4: Simplify right side
    3,393.70x = 15,233,190.79
  5. Step 5: Solve for x
    x = 15,233,190.79/3,393.70
  6. Step 6: Final answer
    x = 4,488.67

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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.