Home / 5,585.86-8,378.61-1,425.85

Finding the Fourth Proportional to 5,585.86, 8,378.61 and 1,425.85

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Solution

The fourth proportional to 5,585.86, 8,378.61 and 1,425.85 is: 2,138.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,585.86 : 8,378.61 = 1,425.85 : x
  2. Step 2: Convert to fraction form
    5,585.86/8,378.61 = 1,425.85/x
  3. Step 3: Cross multiply
    5,585.86x = 8,378.61 × 1,425.85
  4. Step 4: Simplify right side
    5,585.86x = 11,946,669.93
  5. Step 5: Solve for x
    x = 11,946,669.93/5,585.86
  6. Step 6: Final answer
    x = 2,138.73

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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.