Home / 8,399.65-12,607.26-4,242.57

Finding the Fourth Proportional to 8,399.65, 12,607.26 and 4,242.57

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Solution

The fourth proportional to 8,399.65, 12,607.26 and 4,242.57 is: 6,367.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.65 : 12,607.26 = 4,242.57 : x
  2. Step 2: Convert to fraction form
    8,399.65/12,607.26 = 4,242.57/x
  3. Step 3: Cross multiply
    8,399.65x = 12,607.26 × 4,242.57
  4. Step 4: Simplify right side
    8,399.65x = 53,487,187.89
  5. Step 5: Solve for x
    x = 53,487,187.89/8,399.65
  6. Step 6: Final answer
    x = 6,367.79

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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.