Home / 9,289.77-12,819.90-5,310.99

Finding the Fourth Proportional to 9,289.77, 12,819.90 and 5,310.99

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Solution

The fourth proportional to 9,289.77, 12,819.90 and 5,310.99 is: 7,329.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.77 : 12,819.90 = 5,310.99 : x
  2. Step 2: Convert to fraction form
    9,289.77/12,819.90 = 5,310.99/x
  3. Step 3: Cross multiply
    9,289.77x = 12,819.90 × 5,310.99
  4. Step 4: Simplify right side
    9,289.77x = 68,086,296.60
  5. Step 5: Solve for x
    x = 68,086,296.60/9,289.77
  6. Step 6: Final answer
    x = 7,329.17

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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.