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Finding the Fourth Proportional to 7,191.54, 9,902.85 and 7,027.79

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Solution

The fourth proportional to 7,191.54, 9,902.85 and 7,027.79 is: 9,677.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.54 : 9,902.85 = 7,027.79 : x
  2. Step 2: Convert to fraction form
    7,191.54/9,902.85 = 7,027.79/x
  3. Step 3: Cross multiply
    7,191.54x = 9,902.85 × 7,027.79
  4. Step 4: Simplify right side
    7,191.54x = 69,595,100.69
  5. Step 5: Solve for x
    x = 69,595,100.69/7,191.54
  6. Step 6: Final answer
    x = 9,677.36

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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.