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Finding the Fourth Proportional to 8,491.79, 11,718.65 and 4,954.32

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Solution

The fourth proportional to 8,491.79, 11,718.65 and 4,954.32 is: 6,836.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.79 : 11,718.65 = 4,954.32 : x
  2. Step 2: Convert to fraction form
    8,491.79/11,718.65 = 4,954.32/x
  3. Step 3: Cross multiply
    8,491.79x = 11,718.65 × 4,954.32
  4. Step 4: Simplify right side
    8,491.79x = 58,057,954.45
  5. Step 5: Solve for x
    x = 58,057,954.45/8,491.79
  6. Step 6: Final answer
    x = 6,836.95

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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.