Home / 9,189.31-12,680.97-5,210.77

Finding the Fourth Proportional to 9,189.31, 12,680.97 and 5,210.77

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Solution

The fourth proportional to 9,189.31, 12,680.97 and 5,210.77 is: 7,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.31 : 12,680.97 = 5,210.77 : x
  2. Step 2: Convert to fraction form
    9,189.31/12,680.97 = 5,210.77/x
  3. Step 3: Cross multiply
    9,189.31x = 12,680.97 × 5,210.77
  4. Step 4: Simplify right side
    9,189.31x = 66,077,618.05
  5. Step 5: Solve for x
    x = 66,077,618.05/9,189.31
  6. Step 6: Final answer
    x = 7,190.71

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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.