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Finding the Fourth Proportional to 7,199.89, 9,935.81 and 4,057.09

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Solution

The fourth proportional to 7,199.89, 9,935.81 and 4,057.09 is: 5,598.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,199.89 : 9,935.81 = 4,057.09 : x
  2. Step 2: Convert to fraction form
    7,199.89/9,935.81 = 4,057.09/x
  3. Step 3: Cross multiply
    7,199.89x = 9,935.81 × 4,057.09
  4. Step 4: Simplify right side
    7,199.89x = 40,310,455.11
  5. Step 5: Solve for x
    x = 40,310,455.11/7,199.89
  6. Step 6: Final answer
    x = 5,598.76

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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.