Home / 7,126.20-10,687.90-1,930.84

Finding the Fourth Proportional to 7,126.20, 10,687.90 and 1,930.84

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Solution

The fourth proportional to 7,126.20, 10,687.90 and 1,930.84 is: 2,895.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.20 : 10,687.90 = 1,930.84 : x
  2. Step 2: Convert to fraction form
    7,126.20/10,687.90 = 1,930.84/x
  3. Step 3: Cross multiply
    7,126.20x = 10,687.90 × 1,930.84
  4. Step 4: Simplify right side
    7,126.20x = 20,636,624.84
  5. Step 5: Solve for x
    x = 20,636,624.84/7,126.20
  6. Step 6: Final answer
    x = 2,895.88

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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.