Home / 1,678.96-2,516.14-1,267.76

Finding the Fourth Proportional to 1,678.96, 2,516.14 and 1,267.76

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Solution

The fourth proportional to 1,678.96, 2,516.14 and 1,267.76 is: 1,899.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.96 : 2,516.14 = 1,267.76 : x
  2. Step 2: Convert to fraction form
    1,678.96/2,516.14 = 1,267.76/x
  3. Step 3: Cross multiply
    1,678.96x = 2,516.14 × 1,267.76
  4. Step 4: Simplify right side
    1,678.96x = 3,189,861.65
  5. Step 5: Solve for x
    x = 3,189,861.65/1,678.96
  6. Step 6: Final answer
    x = 1,899.90

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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.