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Finding the Fourth Proportional to 3,678.70, 5,518.05 and 1,950.70

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Solution

The fourth proportional to 3,678.70, 5,518.05 and 1,950.70 is: 2,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.70 : 5,518.05 = 1,950.70 : x
  2. Step 2: Convert to fraction form
    3,678.70/5,518.05 = 1,950.70/x
  3. Step 3: Cross multiply
    3,678.70x = 5,518.05 × 1,950.70
  4. Step 4: Simplify right side
    3,678.70x = 10,764,060.14
  5. Step 5: Solve for x
    x = 10,764,060.14/3,678.70
  6. Step 6: Final answer
    x = 2,926.05

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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.