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Finding the Fourth Proportional to 5,370.88, 7,409.90 and 3,381.56

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Solution

The fourth proportional to 5,370.88, 7,409.90 and 3,381.56 is: 4,665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,370.88 : 7,409.90 = 3,381.56 : x
  2. Step 2: Convert to fraction form
    5,370.88/7,409.90 = 3,381.56/x
  3. Step 3: Cross multiply
    5,370.88x = 7,409.90 × 3,381.56
  4. Step 4: Simplify right side
    5,370.88x = 25,057,021.44
  5. Step 5: Solve for x
    x = 25,057,021.44/5,370.88
  6. Step 6: Final answer
    x = 4,665.35

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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.