Home / 4,178.12-6,267.69-1,405.08

Finding the Fourth Proportional to 4,178.12, 6,267.69 and 1,405.08

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Solution

The fourth proportional to 4,178.12, 6,267.69 and 1,405.08 is: 2,107.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.12 : 6,267.69 = 1,405.08 : x
  2. Step 2: Convert to fraction form
    4,178.12/6,267.69 = 1,405.08/x
  3. Step 3: Cross multiply
    4,178.12x = 6,267.69 × 1,405.08
  4. Step 4: Simplify right side
    4,178.12x = 8,806,605.87
  5. Step 5: Solve for x
    x = 8,806,605.87/4,178.12
  6. Step 6: Final answer
    x = 2,107.79

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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.