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Finding the Fourth Proportional to 8,602.78, 11,877.54 and 6,609.77

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Solution

The fourth proportional to 8,602.78, 11,877.54 and 6,609.77 is: 9,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.78 : 11,877.54 = 6,609.77 : x
  2. Step 2: Convert to fraction form
    8,602.78/11,877.54 = 6,609.77/x
  3. Step 3: Cross multiply
    8,602.78x = 11,877.54 × 6,609.77
  4. Step 4: Simplify right side
    8,602.78x = 78,507,807.57
  5. Step 5: Solve for x
    x = 78,507,807.57/8,602.78
  6. Step 6: Final answer
    x = 9,125.87

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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.