Home / 3,307.78-4,961.64-999.28

Finding the Fourth Proportional to 3,307.78, 4,961.64 and 999.28

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Solution

The fourth proportional to 3,307.78, 4,961.64 and 999.28 is: 1,498.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,307.78 : 4,961.64 = 999.28 : x
  2. Step 2: Convert to fraction form
    3,307.78/4,961.64 = 999.28/x
  3. Step 3: Cross multiply
    3,307.78x = 4,961.64 × 999.28
  4. Step 4: Simplify right side
    3,307.78x = 4,958,067.62
  5. Step 5: Solve for x
    x = 4,958,067.62/3,307.78
  6. Step 6: Final answer
    x = 1,498.91

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1.5x scale

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.