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Finding the Fourth Proportional to 8,709.48, 13,064.13 and 2,135.61

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Solution

The fourth proportional to 8,709.48, 13,064.13 and 2,135.61 is: 3,203.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.48 : 13,064.13 = 2,135.61 : x
  2. Step 2: Convert to fraction form
    8,709.48/13,064.13 = 2,135.61/x
  3. Step 3: Cross multiply
    8,709.48x = 13,064.13 × 2,135.61
  4. Step 4: Simplify right side
    8,709.48x = 27,899,886.67
  5. Step 5: Solve for x
    x = 27,899,886.67/8,709.48
  6. Step 6: Final answer
    x = 3,203.39

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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.