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Finding the Fourth Proportional to 8,491.82, 11,718.84 and 4,715.23

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Solution

The fourth proportional to 8,491.82, 11,718.84 and 4,715.23 is: 6,507.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.82 : 11,718.84 = 4,715.23 : x
  2. Step 2: Convert to fraction form
    8,491.82/11,718.84 = 4,715.23/x
  3. Step 3: Cross multiply
    8,491.82x = 11,718.84 × 4,715.23
  4. Step 4: Simplify right side
    8,491.82x = 55,256,967.34
  5. Step 5: Solve for x
    x = 55,256,967.34/8,491.82
  6. Step 6: Final answer
    x = 6,507.09

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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.