Home / 9,189.09-12,680.19-5,210.87

Finding the Fourth Proportional to 9,189.09, 12,680.19 and 5,210.87

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Solution

The fourth proportional to 9,189.09, 12,680.19 and 5,210.87 is: 7,190.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.09 : 12,680.19 = 5,210.87 : x
  2. Step 2: Convert to fraction form
    9,189.09/12,680.19 = 5,210.87/x
  3. Step 3: Cross multiply
    9,189.09x = 12,680.19 × 5,210.87
  4. Step 4: Simplify right side
    9,189.09x = 66,074,758.26
  5. Step 5: Solve for x
    x = 66,074,758.26/9,189.09
  6. Step 6: Final answer
    x = 7,190.57

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Double scale
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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.