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Finding the Fourth Proportional to 8,371.86, 12,553.47 and 3,440.58

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Solution

The fourth proportional to 8,371.86, 12,553.47 and 3,440.58 is: 5,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.86 : 12,553.47 = 3,440.58 : x
  2. Step 2: Convert to fraction form
    8,371.86/12,553.47 = 3,440.58/x
  3. Step 3: Cross multiply
    8,371.86x = 12,553.47 × 3,440.58
  4. Step 4: Simplify right side
    8,371.86x = 43,191,217.81
  5. Step 5: Solve for x
    x = 43,191,217.81/8,371.86
  6. Step 6: Final answer
    x = 5,159.09

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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.