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Finding the Fourth Proportional to 5,473.89, 8,203.68 and 4,778.79

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Solution

The fourth proportional to 5,473.89, 8,203.68 and 4,778.79 is: 7,161.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,473.89 : 8,203.68 = 4,778.79 : x
  2. Step 2: Convert to fraction form
    5,473.89/8,203.68 = 4,778.79/x
  3. Step 3: Cross multiply
    5,473.89x = 8,203.68 × 4,778.79
  4. Step 4: Simplify right side
    5,473.89x = 39,203,663.95
  5. Step 5: Solve for x
    x = 39,203,663.95/5,473.89
  6. Step 6: Final answer
    x = 7,161.94

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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.