Home / 6,107.38-8,420.79-5,161.50

Finding the Fourth Proportional to 6,107.38, 8,420.79 and 5,161.50

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Solution

The fourth proportional to 6,107.38, 8,420.79 and 5,161.50 is: 7,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,107.38 : 8,420.79 = 5,161.50 : x
  2. Step 2: Convert to fraction form
    6,107.38/8,420.79 = 5,161.50/x
  3. Step 3: Cross multiply
    6,107.38x = 8,420.79 × 5,161.50
  4. Step 4: Simplify right side
    6,107.38x = 43,463,926.94
  5. Step 5: Solve for x
    x = 43,463,926.94/6,107.38
  6. Step 6: Final answer
    x = 7,116.63

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Half scale
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Double scale
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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.