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Finding the Fourth Proportional to 6,991.92, 10,491.53 and 6,588.54

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Solution

The fourth proportional to 6,991.92, 10,491.53 and 6,588.54 is: 9,886.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.92 : 10,491.53 = 6,588.54 : x
  2. Step 2: Convert to fraction form
    6,991.92/10,491.53 = 6,588.54/x
  3. Step 3: Cross multiply
    6,991.92x = 10,491.53 × 6,588.54
  4. Step 4: Simplify right side
    6,991.92x = 69,123,832.12
  5. Step 5: Solve for x
    x = 69,123,832.12/6,991.92
  6. Step 6: Final answer
    x = 9,886.24

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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.