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Finding the Fourth Proportional to 6,899.85, 9,521.79 and 3,756.03

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Solution

The fourth proportional to 6,899.85, 9,521.79 and 3,756.03 is: 5,183.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.85 : 9,521.79 = 3,756.03 : x
  2. Step 2: Convert to fraction form
    6,899.85/9,521.79 = 3,756.03/x
  3. Step 3: Cross multiply
    6,899.85x = 9,521.79 × 3,756.03
  4. Step 4: Simplify right side
    6,899.85x = 35,764,110.11
  5. Step 5: Solve for x
    x = 35,764,110.11/6,899.85
  6. Step 6: Final answer
    x = 5,183.32

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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.