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Finding the Fourth Proportional to 5,381.96, 8,079.42 and 3,645.32

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Solution

The fourth proportional to 5,381.96, 8,079.42 and 3,645.32 is: 5,472.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.96 : 8,079.42 = 3,645.32 : x
  2. Step 2: Convert to fraction form
    5,381.96/8,079.42 = 3,645.32/x
  3. Step 3: Cross multiply
    5,381.96x = 8,079.42 × 3,645.32
  4. Step 4: Simplify right side
    5,381.96x = 29,452,071.31
  5. Step 5: Solve for x
    x = 29,452,071.31/5,381.96
  6. Step 6: Final answer
    x = 5,472.37

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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.