Home / 4,178.25-6,267.78-1,405.62

Finding the Fourth Proportional to 4,178.25, 6,267.78 and 1,405.62

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Solution

The fourth proportional to 4,178.25, 6,267.78 and 1,405.62 is: 2,108.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.25 : 6,267.78 = 1,405.62 : x
  2. Step 2: Convert to fraction form
    4,178.25/6,267.78 = 1,405.62/x
  3. Step 3: Cross multiply
    4,178.25x = 6,267.78 × 1,405.62
  4. Step 4: Simplify right side
    4,178.25x = 8,810,116.92
  5. Step 5: Solve for x
    x = 8,810,116.92/4,178.25
  6. Step 6: Final answer
    x = 2,108.57

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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.