Home / 8,705.48-13,058.14-2,131.61

Finding the Fourth Proportional to 8,705.48, 13,058.14 and 2,131.61

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Solution

The fourth proportional to 8,705.48, 13,058.14 and 2,131.61 is: 3,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.48 : 13,058.14 = 2,131.61 : x
  2. Step 2: Convert to fraction form
    8,705.48/13,058.14 = 2,131.61/x
  3. Step 3: Cross multiply
    8,705.48x = 13,058.14 × 2,131.61
  4. Step 4: Simplify right side
    8,705.48x = 27,834,861.81
  5. Step 5: Solve for x
    x = 27,834,861.81/8,705.48
  6. Step 6: Final answer
    x = 3,197.40

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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.