Home / 9,289.40-12,819.37-5,310.60

Finding the Fourth Proportional to 9,289.40, 12,819.37 and 5,310.60

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Solution

The fourth proportional to 9,289.40, 12,819.37 and 5,310.60 is: 7,328.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.40 : 12,819.37 = 5,310.60 : x
  2. Step 2: Convert to fraction form
    9,289.40/12,819.37 = 5,310.60/x
  3. Step 3: Cross multiply
    9,289.40x = 12,819.37 × 5,310.60
  4. Step 4: Simplify right side
    9,289.40x = 68,078,546.32
  5. Step 5: Solve for x
    x = 68,078,546.32/9,289.40
  6. Step 6: Final answer
    x = 7,328.63

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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.