Home / 4,002.72-6,002.12-1,405.28

Finding the Fourth Proportional to 4,002.72, 6,002.12 and 1,405.28

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Solution

The fourth proportional to 4,002.72, 6,002.12 and 1,405.28 is: 2,107.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,002.72 : 6,002.12 = 1,405.28 : x
  2. Step 2: Convert to fraction form
    4,002.72/6,002.12 = 1,405.28/x
  3. Step 3: Cross multiply
    4,002.72x = 6,002.12 × 1,405.28
  4. Step 4: Simplify right side
    4,002.72x = 8,434,659.19
  5. Step 5: Solve for x
    x = 8,434,659.19/4,002.72
  6. Step 6: Final answer
    x = 2,107.23

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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.