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Finding the Fourth Proportional to 6,889.55, 9,456.84 and 6,126.84

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Solution

The fourth proportional to 6,889.55, 9,456.84 and 6,126.84 is: 8,409.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,889.55 : 9,456.84 = 6,126.84 : x
  2. Step 2: Convert to fraction form
    6,889.55/9,456.84 = 6,126.84/x
  3. Step 3: Cross multiply
    6,889.55x = 9,456.84 × 6,126.84
  4. Step 4: Simplify right side
    6,889.55x = 57,940,545.59
  5. Step 5: Solve for x
    x = 57,940,545.59/6,889.55
  6. Step 6: Final answer
    x = 8,409.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.