Home / 3,419.72-5,129.58-822.66

Finding the Fourth Proportional to 3,419.72, 5,129.58 and 822.66

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Solution

The fourth proportional to 3,419.72, 5,129.58 and 822.66 is: 1,233.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.72 : 5,129.58 = 822.66 : x
  2. Step 2: Convert to fraction form
    3,419.72/5,129.58 = 822.66/x
  3. Step 3: Cross multiply
    3,419.72x = 5,129.58 × 822.66
  4. Step 4: Simplify right side
    3,419.72x = 4,219,879.50
  5. Step 5: Solve for x
    x = 4,219,879.50/3,419.72
  6. Step 6: Final answer
    x = 1,233.98

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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.