Home / 2,643.72-3,964.80-999.04

Finding the Fourth Proportional to 2,643.72, 3,964.80 and 999.04

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Solution

The fourth proportional to 2,643.72, 3,964.80 and 999.04 is: 1,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.72 : 3,964.80 = 999.04 : x
  2. Step 2: Convert to fraction form
    2,643.72/3,964.80 = 999.04/x
  3. Step 3: Cross multiply
    2,643.72x = 3,964.80 × 999.04
  4. Step 4: Simplify right side
    2,643.72x = 3,960,993.79
  5. Step 5: Solve for x
    x = 3,960,993.79/2,643.72
  6. Step 6: Final answer
    x = 1,498.27

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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.