Home / 8,623.60-12,935.67-2,780.26

Finding the Fourth Proportional to 8,623.60, 12,935.67 and 2,780.26

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Solution

The fourth proportional to 8,623.60, 12,935.67 and 2,780.26 is: 4,170.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.60 : 12,935.67 = 2,780.26 : x
  2. Step 2: Convert to fraction form
    8,623.60/12,935.67 = 2,780.26/x
  3. Step 3: Cross multiply
    8,623.60x = 12,935.67 × 2,780.26
  4. Step 4: Simplify right side
    8,623.60x = 35,964,525.87
  5. Step 5: Solve for x
    x = 35,964,525.87/8,623.60
  6. Step 6: Final answer
    x = 4,170.48

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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.