Home / 5,159.43-7,739.28-1,872.72

Finding the Fourth Proportional to 5,159.43, 7,739.28 and 1,872.72

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Solution

The fourth proportional to 5,159.43, 7,739.28 and 1,872.72 is: 2,809.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.43 : 7,739.28 = 1,872.72 : x
  2. Step 2: Convert to fraction form
    5,159.43/7,739.28 = 1,872.72/x
  3. Step 3: Cross multiply
    5,159.43x = 7,739.28 × 1,872.72
  4. Step 4: Simplify right side
    5,159.43x = 14,493,504.44
  5. Step 5: Solve for x
    x = 14,493,504.44/5,159.43
  6. Step 6: Final answer
    x = 2,809.13

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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.