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Finding the Fourth Proportional to 6,982.51, 9,635.90 and 3,838.90

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Solution

The fourth proportional to 6,982.51, 9,635.90 and 3,838.90 is: 5,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,982.51 : 9,635.90 = 3,838.90 : x
  2. Step 2: Convert to fraction form
    6,982.51/9,635.90 = 3,838.90/x
  3. Step 3: Cross multiply
    6,982.51x = 9,635.90 × 3,838.90
  4. Step 4: Simplify right side
    6,982.51x = 36,991,256.51
  5. Step 5: Solve for x
    x = 36,991,256.51/6,982.51
  6. Step 6: Final answer
    x = 5,297.70

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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.