Home / 5,682.50-7,835.14-3,890.85

Finding the Fourth Proportional to 5,682.50, 7,835.14 and 3,890.85

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Solution

The fourth proportional to 5,682.50, 7,835.14 and 3,890.85 is: 5,364.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,682.50 : 7,835.14 = 3,890.85 : x
  2. Step 2: Convert to fraction form
    5,682.50/7,835.14 = 3,890.85/x
  3. Step 3: Cross multiply
    5,682.50x = 7,835.14 × 3,890.85
  4. Step 4: Simplify right side
    5,682.50x = 30,485,354.47
  5. Step 5: Solve for x
    x = 30,485,354.47/5,682.50
  6. Step 6: Final answer
    x = 5,364.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.