Home / 9,189.89-12,681.66-5,211.27

Finding the Fourth Proportional to 9,189.89, 12,681.66 and 5,211.27

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Solution

The fourth proportional to 9,189.89, 12,681.66 and 5,211.27 is: 7,191.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.89 : 12,681.66 = 5,211.27 : x
  2. Step 2: Convert to fraction form
    9,189.89/12,681.66 = 5,211.27/x
  3. Step 3: Cross multiply
    9,189.89x = 12,681.66 × 5,211.27
  4. Step 4: Simplify right side
    9,189.89x = 66,087,573.85
  5. Step 5: Solve for x
    x = 66,087,573.85/9,189.89
  6. Step 6: Final answer
    x = 7,191.34

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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.