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Finding the Fourth Proportional to 6,889.84, 9,491.10 and 4,995.85

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Solution

The fourth proportional to 6,889.84, 9,491.10 and 4,995.85 is: 6,882.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,889.84 : 9,491.10 = 4,995.85 : x
  2. Step 2: Convert to fraction form
    6,889.84/9,491.10 = 4,995.85/x
  3. Step 3: Cross multiply
    6,889.84x = 9,491.10 × 4,995.85
  4. Step 4: Simplify right side
    6,889.84x = 47,416,111.94
  5. Step 5: Solve for x
    x = 47,416,111.94/6,889.84
  6. Step 6: Final answer
    x = 6,882.03

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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.