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Finding the Fourth Proportional to 5,641.50, 7,786.80 and 3,403.44

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Solution

The fourth proportional to 5,641.50, 7,786.80 and 3,403.44 is: 4,697.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.50 : 7,786.80 = 3,403.44 : x
  2. Step 2: Convert to fraction form
    5,641.50/7,786.80 = 3,403.44/x
  3. Step 3: Cross multiply
    5,641.50x = 7,786.80 × 3,403.44
  4. Step 4: Simplify right side
    5,641.50x = 26,501,906.59
  5. Step 5: Solve for x
    x = 26,501,906.59/5,641.50
  6. Step 6: Final answer
    x = 4,697.67

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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.