Home / 3,199.88-4,415.78-1,802.64

Finding the Fourth Proportional to 3,199.88, 4,415.78 and 1,802.64

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Solution

The fourth proportional to 3,199.88, 4,415.78 and 1,802.64 is: 2,487.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.88 : 4,415.78 = 1,802.64 : x
  2. Step 2: Convert to fraction form
    3,199.88/4,415.78 = 1,802.64/x
  3. Step 3: Cross multiply
    3,199.88x = 4,415.78 × 1,802.64
  4. Step 4: Simplify right side
    3,199.88x = 7,960,061.66
  5. Step 5: Solve for x
    x = 7,960,061.66/3,199.88
  6. Step 6: Final answer
    x = 2,487.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.