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Finding the Fourth Proportional to 8,491.11, 11,719.14 and 4,715.49

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Solution

The fourth proportional to 8,491.11, 11,719.14 and 4,715.49 is: 6,508.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.11 : 11,719.14 = 4,715.49 : x
  2. Step 2: Convert to fraction form
    8,491.11/11,719.14 = 4,715.49/x
  3. Step 3: Cross multiply
    8,491.11x = 11,719.14 × 4,715.49
  4. Step 4: Simplify right side
    8,491.11x = 55,261,487.48
  5. Step 5: Solve for x
    x = 55,261,487.48/8,491.11
  6. Step 6: Final answer
    x = 6,508.16

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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.