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Finding the Fourth Proportional to 8,576.88, 12,922.98 and 7,756.08

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Solution

The fourth proportional to 8,576.88, 12,922.98 and 7,756.08 is: 11,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,576.88 : 12,922.98 = 7,756.08 : x
  2. Step 2: Convert to fraction form
    8,576.88/12,922.98 = 7,756.08/x
  3. Step 3: Cross multiply
    8,576.88x = 12,922.98 × 7,756.08
  4. Step 4: Simplify right side
    8,576.88x = 100,231,666.72
  5. Step 5: Solve for x
    x = 100,231,666.72/8,576.88
  6. Step 6: Final answer
    x = 11,686.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.