Home / 8,561.78-12,840.70-3,295.06

Finding the Fourth Proportional to 8,561.78, 12,840.70 and 3,295.06

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Solution

The fourth proportional to 8,561.78, 12,840.70 and 3,295.06 is: 4,941.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.78 : 12,840.70 = 3,295.06 : x
  2. Step 2: Convert to fraction form
    8,561.78/12,840.70 = 3,295.06/x
  3. Step 3: Cross multiply
    8,561.78x = 12,840.70 × 3,295.06
  4. Step 4: Simplify right side
    8,561.78x = 42,310,868.70
  5. Step 5: Solve for x
    x = 42,310,868.70/8,561.78
  6. Step 6: Final answer
    x = 4,941.83

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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.