Home / 2,672.91-4,009.75-1,438.65

Finding the Fourth Proportional to 2,672.91, 4,009.75 and 1,438.65

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Solution

The fourth proportional to 2,672.91, 4,009.75 and 1,438.65 is: 2,158.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.91 : 4,009.75 = 1,438.65 : x
  2. Step 2: Convert to fraction form
    2,672.91/4,009.75 = 1,438.65/x
  3. Step 3: Cross multiply
    2,672.91x = 4,009.75 × 1,438.65
  4. Step 4: Simplify right side
    2,672.91x = 5,768,623.24
  5. Step 5: Solve for x
    x = 5,768,623.24/2,672.91
  6. Step 6: Final answer
    x = 2,158.18

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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.