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Finding the Fourth Proportional to 8,606.48, 11,865.76 and 5,576.20

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Solution

The fourth proportional to 8,606.48, 11,865.76 and 5,576.20 is: 7,687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.48 : 11,865.76 = 5,576.20 : x
  2. Step 2: Convert to fraction form
    8,606.48/11,865.76 = 5,576.20/x
  3. Step 3: Cross multiply
    8,606.48x = 11,865.76 × 5,576.20
  4. Step 4: Simplify right side
    8,606.48x = 66,165,850.91
  5. Step 5: Solve for x
    x = 66,165,850.91/8,606.48
  6. Step 6: Final answer
    x = 7,687.91

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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.