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Finding the Fourth Proportional to 6,935.40, 10,403.10 and 6,892.20

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Solution

The fourth proportional to 6,935.40, 10,403.10 and 6,892.20 is: 10,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,935.40 : 10,403.10 = 6,892.20 : x
  2. Step 2: Convert to fraction form
    6,935.40/10,403.10 = 6,892.20/x
  3. Step 3: Cross multiply
    6,935.40x = 10,403.10 × 6,892.20
  4. Step 4: Simplify right side
    6,935.40x = 71,700,245.82
  5. Step 5: Solve for x
    x = 71,700,245.82/6,935.40
  6. Step 6: Final answer
    x = 10,338.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.