Home / 7,890.56-11,835.84-2,697.92

Finding the Fourth Proportional to 7,890.56, 11,835.84 and 2,697.92

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Solution

The fourth proportional to 7,890.56, 11,835.84 and 2,697.92 is: 4,046.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.56 : 11,835.84 = 2,697.92 : x
  2. Step 2: Convert to fraction form
    7,890.56/11,835.84 = 2,697.92/x
  3. Step 3: Cross multiply
    7,890.56x = 11,835.84 × 2,697.92
  4. Step 4: Simplify right side
    7,890.56x = 31,932,149.45
  5. Step 5: Solve for x
    x = 31,932,149.45/7,890.56
  6. Step 6: Final answer
    x = 4,046.88

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1.5x scale

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.