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Finding the Fourth Proportional to 7,201.85, 9,938.30 and 4,015.04

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Solution

The fourth proportional to 7,201.85, 9,938.30 and 4,015.04 is: 5,540.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.85 : 9,938.30 = 4,015.04 : x
  2. Step 2: Convert to fraction form
    7,201.85/9,938.30 = 4,015.04/x
  3. Step 3: Cross multiply
    7,201.85x = 9,938.30 × 4,015.04
  4. Step 4: Simplify right side
    7,201.85x = 39,902,602.27
  5. Step 5: Solve for x
    x = 39,902,602.27/7,201.85
  6. Step 6: Final answer
    x = 5,540.61

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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.