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Finding the Fourth Proportional to 6,991.38, 10,491.92 and 4,520.07

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Solution

The fourth proportional to 6,991.38, 10,491.92 and 4,520.07 is: 6,783.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.38 : 10,491.92 = 4,520.07 : x
  2. Step 2: Convert to fraction form
    6,991.38/10,491.92 = 4,520.07/x
  3. Step 3: Cross multiply
    6,991.38x = 10,491.92 × 4,520.07
  4. Step 4: Simplify right side
    6,991.38x = 47,424,212.83
  5. Step 5: Solve for x
    x = 47,424,212.83/6,991.38
  6. Step 6: Final answer
    x = 6,783.24

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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.