Home / 7,478.88-11,214.12-3,099.48

Finding the Fourth Proportional to 7,478.88, 11,214.12 and 3,099.48

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Solution

The fourth proportional to 7,478.88, 11,214.12 and 3,099.48 is: 4,647.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.88 : 11,214.12 = 3,099.48 : x
  2. Step 2: Convert to fraction form
    7,478.88/11,214.12 = 3,099.48/x
  3. Step 3: Cross multiply
    7,478.88x = 11,214.12 × 3,099.48
  4. Step 4: Simplify right side
    7,478.88x = 34,757,940.66
  5. Step 5: Solve for x
    x = 34,757,940.66/7,478.88
  6. Step 6: Final answer
    x = 4,647.48

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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.