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Finding the Fourth Proportional to 7,057.85, 9,740.25 and 3,914.03

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Solution

The fourth proportional to 7,057.85, 9,740.25 and 3,914.03 is: 5,401.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,057.85 : 9,740.25 = 3,914.03 : x
  2. Step 2: Convert to fraction form
    7,057.85/9,740.25 = 3,914.03/x
  3. Step 3: Cross multiply
    7,057.85x = 9,740.25 × 3,914.03
  4. Step 4: Simplify right side
    7,057.85x = 38,123,582.01
  5. Step 5: Solve for x
    x = 38,123,582.01/7,057.85
  6. Step 6: Final answer
    x = 5,401.59

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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.