Home / 3,679.84-5,080.05-2,838.65

Finding the Fourth Proportional to 3,679.84, 5,080.05 and 2,838.65

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Solution

The fourth proportional to 3,679.84, 5,080.05 and 2,838.65 is: 3,918.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.84 : 5,080.05 = 2,838.65 : x
  2. Step 2: Convert to fraction form
    3,679.84/5,080.05 = 2,838.65/x
  3. Step 3: Cross multiply
    3,679.84x = 5,080.05 × 2,838.65
  4. Step 4: Simplify right side
    3,679.84x = 14,420,483.93
  5. Step 5: Solve for x
    x = 14,420,483.93/3,679.84
  6. Step 6: Final answer
    x = 3,918.79

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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.