Home / 8,431.80-12,658.17-5,460.51

Finding the Fourth Proportional to 8,431.80, 12,658.17 and 5,460.51

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Solution

The fourth proportional to 8,431.80, 12,658.17 and 5,460.51 is: 8,197.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.80 : 12,658.17 = 5,460.51 : x
  2. Step 2: Convert to fraction form
    8,431.80/12,658.17 = 5,460.51/x
  3. Step 3: Cross multiply
    8,431.80x = 12,658.17 × 5,460.51
  4. Step 4: Simplify right side
    8,431.80x = 69,120,131.81
  5. Step 5: Solve for x
    x = 69,120,131.81/8,431.80
  6. Step 6: Final answer
    x = 8,197.56

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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.