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Finding the Fourth Proportional to 6,672.79, 9,984.54 and 5,491.81

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Solution

The fourth proportional to 6,672.79, 9,984.54 and 5,491.81 is: 8,217.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.79 : 9,984.54 = 5,491.81 : x
  2. Step 2: Convert to fraction form
    6,672.79/9,984.54 = 5,491.81/x
  3. Step 3: Cross multiply
    6,672.79x = 9,984.54 × 5,491.81
  4. Step 4: Simplify right side
    6,672.79x = 54,833,196.62
  5. Step 5: Solve for x
    x = 54,833,196.62/6,672.79
  6. Step 6: Final answer
    x = 8,217.43

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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.