Home / 3,479.54-4,801.82-1,987.38

Finding the Fourth Proportional to 3,479.54, 4,801.82 and 1,987.38

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Solution

The fourth proportional to 3,479.54, 4,801.82 and 1,987.38 is: 2,742.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.54 : 4,801.82 = 1,987.38 : x
  2. Step 2: Convert to fraction form
    3,479.54/4,801.82 = 1,987.38/x
  3. Step 3: Cross multiply
    3,479.54x = 4,801.82 × 1,987.38
  4. Step 4: Simplify right side
    3,479.54x = 9,543,031.09
  5. Step 5: Solve for x
    x = 9,543,031.09/3,479.54
  6. Step 6: Final answer
    x = 2,742.62

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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.