Home / 7,611.78-11,418.57-2,930.70

Finding the Fourth Proportional to 7,611.78, 11,418.57 and 2,930.70

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Solution

The fourth proportional to 7,611.78, 11,418.57 and 2,930.70 is: 4,396.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.78 : 11,418.57 = 2,930.70 : x
  2. Step 2: Convert to fraction form
    7,611.78/11,418.57 = 2,930.70/x
  3. Step 3: Cross multiply
    7,611.78x = 11,418.57 × 2,930.70
  4. Step 4: Simplify right side
    7,611.78x = 33,464,403.10
  5. Step 5: Solve for x
    x = 33,464,403.10/7,611.78
  6. Step 6: Final answer
    x = 4,396.40

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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.