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Finding the Fourth Proportional to 5,503.70, 7,584.90 and 3,910.40

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Solution

The fourth proportional to 5,503.70, 7,584.90 and 3,910.40 is: 5,389.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,503.70 : 7,584.90 = 3,910.40 : x
  2. Step 2: Convert to fraction form
    5,503.70/7,584.90 = 3,910.40/x
  3. Step 3: Cross multiply
    5,503.70x = 7,584.90 × 3,910.40
  4. Step 4: Simplify right side
    5,503.70x = 29,659,992.96
  5. Step 5: Solve for x
    x = 29,659,992.96/5,503.70
  6. Step 6: Final answer
    x = 5,389.10

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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.