Home / 9,289.89-12,819.60-5,311.44

Finding the Fourth Proportional to 9,289.89, 12,819.60 and 5,311.44

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Solution

The fourth proportional to 9,289.89, 12,819.60 and 5,311.44 is: 7,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.89 : 12,819.60 = 5,311.44 : x
  2. Step 2: Convert to fraction form
    9,289.89/12,819.60 = 5,311.44/x
  3. Step 3: Cross multiply
    9,289.89x = 12,819.60 × 5,311.44
  4. Step 4: Simplify right side
    9,289.89x = 68,090,536.22
  5. Step 5: Solve for x
    x = 68,090,536.22/9,289.89
  6. Step 6: Final answer
    x = 7,329.53

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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.