Home / 4,212.90-6,319.62-1,439.82

Finding the Fourth Proportional to 4,212.90, 6,319.62 and 1,439.82

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Solution

The fourth proportional to 4,212.90, 6,319.62 and 1,439.82 is: 2,159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.90 : 6,319.62 = 1,439.82 : x
  2. Step 2: Convert to fraction form
    4,212.90/6,319.62 = 1,439.82/x
  3. Step 3: Cross multiply
    4,212.90x = 6,319.62 × 1,439.82
  4. Step 4: Simplify right side
    4,212.90x = 9,099,115.27
  5. Step 5: Solve for x
    x = 9,099,115.27/4,212.90
  6. Step 6: Final answer
    x = 2,159.82

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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.