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Finding the Fourth Proportional to 8,491.52, 11,718.24 and 4,906.40

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Solution

The fourth proportional to 8,491.52, 11,718.24 and 4,906.40 is: 6,770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.52 : 11,718.24 = 4,906.40 : x
  2. Step 2: Convert to fraction form
    8,491.52/11,718.24 = 4,906.40/x
  3. Step 3: Cross multiply
    8,491.52x = 11,718.24 × 4,906.40
  4. Step 4: Simplify right side
    8,491.52x = 57,494,372.74
  5. Step 5: Solve for x
    x = 57,494,372.74/8,491.52
  6. Step 6: Final answer
    x = 6,770.80

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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.