Home / 8,770.91-13,160.81-3,840.57

Finding the Fourth Proportional to 8,770.91, 13,160.81 and 3,840.57

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Solution

The fourth proportional to 8,770.91, 13,160.81 and 3,840.57 is: 5,762.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.91 : 13,160.81 = 3,840.57 : x
  2. Step 2: Convert to fraction form
    8,770.91/13,160.81 = 3,840.57/x
  3. Step 3: Cross multiply
    8,770.91x = 13,160.81 × 3,840.57
  4. Step 4: Simplify right side
    8,770.91x = 50,545,021.66
  5. Step 5: Solve for x
    x = 50,545,021.66/8,770.91
  6. Step 6: Final answer
    x = 5,762.81

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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.