Home / 7,675.60-11,515.82-2,745.12

Finding the Fourth Proportional to 7,675.60, 11,515.82 and 2,745.12

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Solution

The fourth proportional to 7,675.60, 11,515.82 and 2,745.12 is: 4,118.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,675.60 : 11,515.82 = 2,745.12 : x
  2. Step 2: Convert to fraction form
    7,675.60/11,515.82 = 2,745.12/x
  3. Step 3: Cross multiply
    7,675.60x = 11,515.82 × 2,745.12
  4. Step 4: Simplify right side
    7,675.60x = 31,612,307.80
  5. Step 5: Solve for x
    x = 31,612,307.80/7,675.60
  6. Step 6: Final answer
    x = 4,118.55

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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.