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Finding the Fourth Proportional to 8,610.85, 12,905.89 and 4,448.59

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Solution

The fourth proportional to 8,610.85, 12,905.89 and 4,448.59 is: 6,667.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.85 : 12,905.89 = 4,448.59 : x
  2. Step 2: Convert to fraction form
    8,610.85/12,905.89 = 4,448.59/x
  3. Step 3: Cross multiply
    8,610.85x = 12,905.89 × 4,448.59
  4. Step 4: Simplify right side
    8,610.85x = 57,413,013.20
  5. Step 5: Solve for x
    x = 57,413,013.20/8,610.85
  6. Step 6: Final answer
    x = 6,667.52

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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.