Home / 4,178.75-6,268.44-1,405.40

Finding the Fourth Proportional to 4,178.75, 6,268.44 and 1,405.40

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Solution

The fourth proportional to 4,178.75, 6,268.44 and 1,405.40 is: 2,108.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.75 : 6,268.44 = 1,405.40 : x
  2. Step 2: Convert to fraction form
    4,178.75/6,268.44 = 1,405.40/x
  3. Step 3: Cross multiply
    4,178.75x = 6,268.44 × 1,405.40
  4. Step 4: Simplify right side
    4,178.75x = 8,809,639.50
  5. Step 5: Solve for x
    x = 8,809,639.50/4,178.75
  6. Step 6: Final answer
    x = 2,108.20

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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.