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Finding the Fourth Proportional to 8,610.77, 12,889.35 and 6,631.30

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Solution

The fourth proportional to 8,610.77, 12,889.35 and 6,631.30 is: 9,926.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.77 : 12,889.35 = 6,631.30 : x
  2. Step 2: Convert to fraction form
    8,610.77/12,889.35 = 6,631.30/x
  3. Step 3: Cross multiply
    8,610.77x = 12,889.35 × 6,631.30
  4. Step 4: Simplify right side
    8,610.77x = 85,473,114.43
  5. Step 5: Solve for x
    x = 85,473,114.43/8,610.77
  6. Step 6: Final answer
    x = 9,926.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.