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Finding the Fourth Proportional to 6,857.88, 10,286.88 and 1,663.76

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Solution

The fourth proportional to 6,857.88, 10,286.88 and 1,663.76 is: 2,495.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,857.88 : 10,286.88 = 1,663.76 : x
  2. Step 2: Convert to fraction form
    6,857.88/10,286.88 = 1,663.76/x
  3. Step 3: Cross multiply
    6,857.88x = 10,286.88 × 1,663.76
  4. Step 4: Simplify right side
    6,857.88x = 17,114,899.47
  5. Step 5: Solve for x
    x = 17,114,899.47/6,857.88
  6. Step 6: Final answer
    x = 2,495.65

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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.