Home / 9,289.09-12,819.16-5,310.57

Finding the Fourth Proportional to 9,289.09, 12,819.16 and 5,310.57

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Solution

The fourth proportional to 9,289.09, 12,819.16 and 5,310.57 is: 7,328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.09 : 12,819.16 = 5,310.57 : x
  2. Step 2: Convert to fraction form
    9,289.09/12,819.16 = 5,310.57/x
  3. Step 3: Cross multiply
    9,289.09x = 12,819.16 × 5,310.57
  4. Step 4: Simplify right side
    9,289.09x = 68,077,046.52
  5. Step 5: Solve for x
    x = 68,077,046.52/9,289.09
  6. Step 6: Final answer
    x = 7,328.71

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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.