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Finding the Fourth Proportional to 6,883.92, 10,325.76 and 1,689.78

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Solution

The fourth proportional to 6,883.92, 10,325.76 and 1,689.78 is: 2,534.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,883.92 : 10,325.76 = 1,689.78 : x
  2. Step 2: Convert to fraction form
    6,883.92/10,325.76 = 1,689.78/x
  3. Step 3: Cross multiply
    6,883.92x = 10,325.76 × 1,689.78
  4. Step 4: Simplify right side
    6,883.92x = 17,448,262.73
  5. Step 5: Solve for x
    x = 17,448,262.73/6,883.92
  6. Step 6: Final answer
    x = 2,534.64

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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.