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Finding the Fourth Proportional to 7,402.20, 11,100.60 and 3,703.20

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Solution

The fourth proportional to 7,402.20, 11,100.60 and 3,703.20 is: 5,553.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,402.20 : 11,100.60 = 3,703.20 : x
  2. Step 2: Convert to fraction form
    7,402.20/11,100.60 = 3,703.20/x
  3. Step 3: Cross multiply
    7,402.20x = 11,100.60 × 3,703.20
  4. Step 4: Simplify right side
    7,402.20x = 41,107,741.92
  5. Step 5: Solve for x
    x = 41,107,741.92/7,402.20
  6. Step 6: Final answer
    x = 5,553.45

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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.