Home / 7,168.45-10,748.58-2,780.79

Finding the Fourth Proportional to 7,168.45, 10,748.58 and 2,780.79

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Solution

The fourth proportional to 7,168.45, 10,748.58 and 2,780.79 is: 4,169.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.45 : 10,748.58 = 2,780.79 : x
  2. Step 2: Convert to fraction form
    7,168.45/10,748.58 = 2,780.79/x
  3. Step 3: Cross multiply
    7,168.45x = 10,748.58 × 2,780.79
  4. Step 4: Simplify right side
    7,168.45x = 29,889,516.91
  5. Step 5: Solve for x
    x = 29,889,516.91/7,168.45
  6. Step 6: Final answer
    x = 4,169.59

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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.