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Finding the Fourth Proportional to 3,780.96, 5,221.71 and 3,368.67

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Solution

The fourth proportional to 3,780.96, 5,221.71 and 3,368.67 is: 4,652.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.96 : 5,221.71 = 3,368.67 : x
  2. Step 2: Convert to fraction form
    3,780.96/5,221.71 = 3,368.67/x
  3. Step 3: Cross multiply
    3,780.96x = 5,221.71 × 3,368.67
  4. Step 4: Simplify right side
    3,780.96x = 17,590,217.83
  5. Step 5: Solve for x
    x = 17,590,217.83/3,780.96
  6. Step 6: Final answer
    x = 4,652.32

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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.