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Finding the Fourth Proportional to 8,576.64, 11,846.88 and 7,090.56

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Solution

The fourth proportional to 8,576.64, 11,846.88 and 7,090.56 is: 9,794.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,576.64 : 11,846.88 = 7,090.56 : x
  2. Step 2: Convert to fraction form
    8,576.64/11,846.88 = 7,090.56/x
  3. Step 3: Cross multiply
    8,576.64x = 11,846.88 × 7,090.56
  4. Step 4: Simplify right side
    8,576.64x = 84,001,013.45
  5. Step 5: Solve for x
    x = 84,001,013.45/8,576.64
  6. Step 6: Final answer
    x = 9,794.16

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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.