Home / 8,712.26-13,068.51-2,138.60

Finding the Fourth Proportional to 8,712.26, 13,068.51 and 2,138.60

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Solution

The fourth proportional to 8,712.26, 13,068.51 and 2,138.60 is: 3,207.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.26 : 13,068.51 = 2,138.60 : x
  2. Step 2: Convert to fraction form
    8,712.26/13,068.51 = 2,138.60/x
  3. Step 3: Cross multiply
    8,712.26x = 13,068.51 × 2,138.60
  4. Step 4: Simplify right side
    8,712.26x = 27,948,315.49
  5. Step 5: Solve for x
    x = 27,948,315.49/8,712.26
  6. Step 6: Final answer
    x = 3,207.93

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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.