Home / 8,390.24-12,585.37-3,458.56

Finding the Fourth Proportional to 8,390.24, 12,585.37 and 3,458.56

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Solution

The fourth proportional to 8,390.24, 12,585.37 and 3,458.56 is: 5,187.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.24 : 12,585.37 = 3,458.56 : x
  2. Step 2: Convert to fraction form
    8,390.24/12,585.37 = 3,458.56/x
  3. Step 3: Cross multiply
    8,390.24x = 12,585.37 × 3,458.56
  4. Step 4: Simplify right side
    8,390.24x = 43,527,257.27
  5. Step 5: Solve for x
    x = 43,527,257.27/8,390.24
  6. Step 6: Final answer
    x = 5,187.84

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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.